In short, there isnt a one-size-fits-all answer
Deck Filters Rat Colony 100%inclusion 100%synergy 6 decks 6 decks Marrow-Gnawer 83%inclusion 83%synergy 5 decks 6 decks Pack Rat 67%inclusion 67%synergy 4 decks 6 decks Piper of the Swarm 67%inclusion 66%synergy 4 decks 6 decks Camellia, the Seedmiser 67%inclusion 56%synergy 4 decks 6 decks Phyrexian Tower 67%inclusion 51%synergy 4 decks 6 decks Kodama's Reach 67%inclusion 45%synergy 4 decks 6 decks Assassin's Trophy 83%inclusion 36%synergy 5 decks 6 decks Game Changers Ancient Tomb 33%inclusion 28%synergy 2 decks 6 decks Seedborn Muse 17%inclusion 11%synergy 1 decks 6 decks Demonic Tutor 17%inclusion 2%synergy 1 decks 6 decks Tergrid, God of Fright 17%inclusion 15%synergy 1 decks 6 decks Worldly Tutor 17%inclusion 7%synergy 1 decks 6 decks Vampiric Tutor 17%inclusion 6%synergy 1 decks 6 decks Creatures Gyome, Master Chef 50%inclusion 46%synergy 3 decks 6 decks Peregrin Took 50%inclusion 37%synergy 3 decks 6 decks Wight of the Reliquary 50%inclusion 38%synergy 3 decks 6 decks Experimental Confectioner 50%inclusion 44%synergy 3 decks 6 decks Ashcoat of the Shadow Swarm 50%inclusion 50%synergy 3 decks 6 decks Cauldron Familiar 50%inclusion 44%synergy 3 decks 6 decks Chatterfang, Squirrel General 50%inclusion 36%synergy 3 decks 6 decks Ogre Slumlord 33%inclusion 31%synergy 2 decks 6 decks Ink-Eyes, Servant of Oni 33%inclusion 33%synergy 2 decks 6 decks Savvy Hunter 33%inclusion 27%synergy 2 decks 6 decks Persistent Marshstalker 33%inclusion 33%synergy 2 decks 6 decks Thornvault Forager 33%inclusion 25%synergy 2 decks 6 decks Elanor Gardner 33%inclusion 30%synergy 2 decks 6 decks Hazel's Brewmaster 33%inclusion 23%synergy 2 decks 6 decks Greta, Sweettooth Scourge 17%inclusion 12%synergy 1 decks 6 decks Mirkwood Bats 17%inclusion -3%synergy 1 decks 6 decks Collector Ouphe 17%inclusion 15%synergy 1 decks 6 decks Brandywine Farmer 17%inclusion 16%synergy 1 decks 6 decks Crypt Rats 17%inclusion 17%synergy 1 decks 6 decks Valley Mightcaller 17%inclusion 16%synergy 1 decks 6 decks The Odd Acorn Gang 17%inclusion 9%synergy 1 decks 6 decks Bloodspore Thrinax 17%inclusion 16%synergy 1 decks 6 decks Thought-Stalker Warlock 17%inclusion 17%synergy 1 decks 6 decks Provisions Merchant 17%inclusion 16%synergy 1 decks 6 decks Thornplate Intimidator 17%inclusion 17%synergy 1 decks 6 decks Ruthless Radrat 17%inclusion 17%synergy 1 decks 6 decks Fauna Shaman 17%inclusion 11%synergy 1 decks 6 decks Roaming Throne 17%inclusion 12%synergy 1 decks 6 decks Scurry of Squirrels 17%inclusion 9%synergy 1 decks 6 decks Pippin, Warden of Isengard 17%inclusion 14%synergy 1 decks 6 decks Honest Rutstein 17%inclusion 8%synergy 1 decks 6 decks Clifftop Lookout 17%inclusion 16%synergy 1 decks 6 decks Honored Dreyleader 17%inclusion 8%synergy 1 decks 6 decks Squirrel Mob 17%inclusion 12%synergy 1 decks 6 decks Nut Collector 17%inclusion 13%synergy 1 decks 6 decks Insatiable Frugivore 17%inclusion 15%synergy 1 decks 6 decks Iridescent Vinelasher 17%inclusion 15%synergy 1 decks 6 decks Beast Whisperer 17%inclusion 3%synergy 1 decks 6 decks Bramble Sovereign 17%inclusion 16%synergy 1 decks 6 decks Maraleaf Rider 17%inclusion 17%synergy 1 decks 6 decks Marionette Apprentice 17%inclusion 9%synergy 1 decks 6 decks Vito, Thorn of the Dusk Rose 17%inclusion 13%synergy 1 decks 6 decks Sunshower Druid 17%inclusion 17%synergy 1 decks 6 decks Deep Forest Hermit 17%inclusion 9%synergy 1 decks 6 decks Hazel of the Rootbloom 17%inclusion 9%synergy 1 decks 6 decks Jarad, Golgari Lich Lord 17%inclusion 8%synergy 1 decks 6 decks Stickytongue Sentinel 17%inclusion 17%synergy 1 decks 6 decks Valley Rotcaller 17%inclusion 10%synergy 1 decks 6 decks Spore Frog 17%inclusion 11%synergy 1 decks 6 decks Carrion Feeder 17%inclusion 9%synergy 1 decks 6 decks Instants Heroic Intervention 50%inclusion 18%synergy 3 decks 6 decks Revitalizing Repast 33%inclusion 13%synergy 2 decks 6 decks Putrefy 33%inclusion 1%synergy 2 decks 6 decks Deadly Rollick 17%inclusion 5%synergy 1 decks 6 decks Bake into a Pie 17%inclusion 14%synergy 1 decks 6 decks Feed the Cauldron 17%inclusion 16%synergy 1 decks 6 decks Sheoldred's Edict 17%inclusion 14%synergy 1 decks 6 decks Entomb 17%inclusion 9%synergy 1 decks 6 decks Return of the Wildspeaker 17%inclusion 5%synergy 1 decks 6 decks Village Rites 17%inclusion 0%synergy 1 decks 6 decks Deadly Dispute 17%inclusion -4%synergy 1 decks 6 decks Dark Ritual 17%inclusion -1%synergy 1 decks 6 decks Verdant Command 17%inclusion 12%synergy 1 decks 6 decks Force of Vigor 17%inclusion 13%synergy 1 decks 6 decks Soul Shatter 17%inclusion 14%synergy 1 decks 6 decks Beast Within 17%inclusion -17%synergy 1 decks 6 decks Malakir Rebirth 17%inclusion 7%synergy 1 decks 6 decks Tamiyo's Safekeeping 17%inclusion 9%synergy 1 decks 6 decks Collective Resistance 17%inclusion 11%synergy 1 decks 6 decks Withstand Death 17%inclusion 16%synergy 1 decks 6 decks Windgrace's Judgment 17%inclusion 12%synergy 1 decks 6 decks Tragic Slip 17%inclusion 13%synergy 1 decks 6 decks Sorceries Victimize 50%inclusion 31%synergy 3 decks 6 decks Farseek 50%inclusion 32%synergy 3 decks 6 decks Cultivate 50%inclusion 11%synergy 3 decks 6 decks Three Visits 33%inclusion 15%synergy 2 decks 6 decks Creeping Corrosion 33%inclusion 31%synergy 2 decks 6 decks Rise of the Witch-king 33%inclusion 22%synergy 2 decks 6 decks Swarmyard Massacre 33%inclusion 23%synergy 2 decks 6 decks Fade from History 33%inclusion 30%synergy 2 decks 6 decks Echoing Return 33%inclusion 33%synergy 2 decks 6 decks Nature's Lore 33%inclusion 8%synergy 2 decks 6 decks Toxic Deluge 33%inclusion 11%synergy 2 decks 6 decks Bala Ged Recovery 33%inclusion 23%synergy 2 decks 6 decks Overwhelming Stampede 33%inclusion 28%synergy 2 decks 6 decks Rise of the Dark Realms 33%inclusion 28%synergy 2 decks 6 decks Blasphemous Edict 25%inclusion 19%synergy 1 decks 4 decks Diabolic Intent 17%inclusion 7%synergy 1 decks 6 decks Diabolic Tutor 17%inclusion 12%synergy 1 decks 6 decks Culling Ritual 17%inclusion -5%synergy 1 decks 6 decks Pest Infestation 17%inclusion 3%synergy 1 decks 6 decks Virtus's Maneuver 17%inclusion 17%synergy 1 decks 6 decks Patriarch's Bidding 17%inclusion 14%synergy 1 decks 6 decks Feed the Swarm 17%inclusion 9%synergy 1 decks 6 decks Revive the Shire 17%inclusion 13%synergy 1 decks 6 decks Finale of Devastation 17%inclusion 9%synergy 1 decks 6 decks Night's Whisper 17%inclusion 7%synergy 1 decks 6 decks Rampant Growth 17%inclusion -15%synergy 1 decks 6 decks Fell 17%inclusion 15%synergy 1 decks 6 decks Rishkar's Expertise 17%inclusion 10%synergy 1 decks 6 decks Reanimate 17%inclusion -3%synergy 1 decks 6 decks Sign in Blood 17%inclusion 10%synergy 1 decks 6 decks Breach the Multiverse 17%inclusion 14%synergy 1 decks 6 decks Utility Artifacts Ashnod's Altar 50%inclusion 32%synergy 3 decks 6 decks Thrumming Stone 50%inclusion 50%synergy 3 decks 6 decks Herald's Horn 50%inclusion 46%synergy 3 decks 6 decks Swiftfoot Boots 50%inclusion 27%synergy 3 decks 6 decks Mirror Box 33%inclusion 33%synergy 2 decks 6 decks Coat of Arms 33%inclusion 29%synergy 2 decks 6 decks Skullclamp 33%inclusion 2%synergy 2 decks 6 decks Phyrexian Altar 33%inclusion 24%synergy 2 decks 6 decks Bontu's Monument 33%inclusion 32%synergy 2 decks 6 decks Jet Medallion 33%inclusion 32%synergy 2 decks 6 decks Kill Switch 17%inclusion 16%synergy 1 decks 6 decks Chitterspitter 17%inclusion 7%synergy 1 decks 6 decks Nuka-Cola Vending Machine 17%inclusion 11%synergy 1 decks 6 decks Sword of the Squeak 17%inclusion 12%synergy 1 decks 6 decks The Great Henge 17%inclusion 10%synergy 1 decks 6 decks Vanquisher's Banner 17%inclusion 13%synergy 1 decks 6 decks Brotherhood Regalia 17%inclusion 14%synergy 1 decks 6 decks Amorphous Axe 17%inclusion 17%synergy 1 decks 6 decks Enchantments Viridian Revel 50%inclusion 47%synergy 3 decks 6 decks Greater Good 50%inclusion 45%synergy 3 decks 6 decks Doubling Season 33%inclusion 16%synergy 2 decks 6 decks Garruk's Uprising 33%inclusion 26%synergy 2 decks 6 decks Bloodbond March 33%inclusion 33%synergy 2 decks 6 decks Meathook Massacre II 20%inclusion 19%synergy 1 decks 5 decks The Meathook Massacre 17%inclusion 9%synergy 1 decks 6 decks Trail of Crumbs 17%inclusion 13%synergy 1 decks 6 decks Squirrel Nest 17%inclusion 9%synergy 1 decks 6 decks Night of the Sweets' Revenge 17%inclusion 10%synergy 1 decks 6 decks Phyrexian Reclamation 17%inclusion 14%synergy 1 decks 6 decks Moldervine Reclamation 17%inclusion -7%synergy 1 decks 6 decks Squirrel Sanctuary 17%inclusion 14%synergy 1 decks 6 decks Tribute to the World Tree 17%inclusion 13%synergy 1 decks 6 decks Dictate of Erebos 17%inclusion 12%synergy 1 decks 6 decks Mirri's Guile 17%inclusion 16%synergy 1 decks 6 decks Scavenger's Talent 17%inclusion 11%synergy 1 decks 6 decks Black Market Connections 17%inclusion 8%synergy 1 decks 6 decks Phyrexian Arena 17%inclusion 4%synergy 1 decks 6 decks Cloakwood Hermit 17%inclusion 14%synergy 1 decks 6 decks Concordant Crossroads 17%inclusion 15%synergy 1 decks 6 decks Planeswalkers Vraska, Golgari Queen 17%inclusion 11%synergy 1 decks 6 decks Utility Lands Swarmyard 50%inclusion 36%synergy 3 decks 6 decks Yavimaya, Cradle of Growth 50%inclusion 23%synergy 3 decks 6 decks Three Tree City 50%inclusion 39%synergy 3 decks 6 decks Bojuka Bog 33%inclusion -9%synergy 2 decks 6 decks Cabal Coffers 33%inclusion 25%synergy 2 decks 6 decks Minas Morgul, Dark Fortress 33%inclusion 32%synergy 2 decks 6 decks Boseiju, Who Endures 33%inclusion 15%synergy 2 decks 6 decks Urborg, Tomb of Yawgmoth 33%inclusion 11%synergy 2 decks 6 decks Rogue's Passage 33%inclusion 11%synergy 2 decks 6 decks Oakhollow Village 17%inclusion 13%synergy 1 decks 6 decks War Room 17%inclusion 15%synergy 1 decks 6 decks Restless Cottage 17%inclusion 9%synergy 1 decks 6 decks Command Beacon 17%inclusion 13%synergy 1 decks 6 decks Tranquil Thicket 17%inclusion 9%synergy 1 decks 6 decks Takenuma, Abandoned Mire 17%inclusion 6%synergy 1 decks 6 decks Mudflat Village 17%inclusion 13%synergy 1 decks 6 decks Reliquary Tower 17%inclusion -6%synergy 1 decks 6 decks Castle Garenbrig 17%inclusion 14%synergy 1 decks 6 decks Oran-Rief, the Vastwood 17%inclusion 7%synergy 1 decks 6 decks Everglades 17%inclusion 16%synergy 1 decks 6 decks Jungle Basin 17%inclusion 16%synergy 1 decks 6 decks Mana Artifacts Arcane Signet 100%inclusion 38%synergy 6 decks 6 decks Sol Ring 100%inclusion 21%synergy 6 decks 6 decks Golgari Signet 50%inclusion 26%synergy 3 decks 6 decks Talisman of Resilience 50%inclusion 26%synergy 3 decks 6 decks Commander's Sphere 17%inclusion 10%synergy 1 decks 6 decks Patchwork Banner 17%inclusion 10%synergy 1 decks 6 decks Fellwar Stone 17%inclusion 13%synergy 1 decks 6 decks Thought Vessel 17%inclusion 11%synergy 1 decks 6 decks Lands Swamp 100%inclusion 2%synergy 6 decks 6 decks Forest 100%inclusion 2%synergy 6 decks 6 decks Command Tower 83%inclusion -2%synergy 5 decks 6 decks Llanowar Wastes 67%inclusion 13%synergy 4 decks 6 decks Darkbore Pathway 67%inclusion 48%synergy 4 decks 6 decks Woodland Cemetery 67%inclusion 2%synergy 4 decks 6 decks Temple of Malady 67%inclusion 33%synergy 4 decks 6 decks Undergrowth Stadium 50%inclusion 11%synergy 3 decks 6 decks Underground Mortuary 50%inclusion 30%synergy 3 decks 6 decks Overgrown Tomb 50%inclusion 2%synergy 3 decks 6 decks Twilight Mire 50%inclusion 9%synergy 3 decks 6 decks Deathcap Glade 50%inclusion 17%synergy 3 decks 6 decks Tainted Wood 50%inclusion 6%synergy 3 decks 6 decks Fabled Passage 33%inclusion 17%synergy 2 decks 6 decks Golgari Rot Farm 33%inclusion -5%synergy 2 decks 6 decks Blooming Marsh 33%inclusion 19%synergy 2 decks 6 decks Verdant Catacombs 33%inclusion 4%synergy 2 decks 6 decks Necroblossom Snarl 33%inclusion -4%synergy 2 decks 6 decks Revitalizing Repast 33%inclusion 13%synergy 2 decks 6 decks Bala Ged Recovery 33%inclusion 23%synergy 2 decks 6 decks Prismatic Vista 17%inclusion 11%synergy 1 decks 6 decks Misty Rainforest 17%inclusion 10%synergy 1 decks 6 decks Exotic Orchard 17%inclusion -12%synergy 1 decks 6 decks Windswept Heath 17%inclusion 9%synergy 1 decks 6 decks Wooded Foothills 17%inclusion 10%synergy 1 decks 6 decks Jungle Hollow 17%inclusion -7%synergy 1 decks 6 decks Cavern of Souls 17%inclusion 10%synergy 1 decks 6 decks Malakir Rebirth 17%inclusion 7%synergy 1 decks 6 decks Evolving Wilds 17%inclusion -9%synergy 1 decks 6 decks Haunted Mire 17%inclusion 1%synergy 1 decks 6 decks Bayou 17%inclusion 5%synergy 1 decks 6 decks Marsh Flats 17%inclusion 11%synergy 1 decks 6 decks Polluted Delta 17%inclusion 10%synergy 1 decks 6 decks Bloodstained Mire 17%inclusion 10%synergy 1 decks 6 decks
This card will reduce any incoming damage by ten
This became especially nasty in Crimson Blaze , as Ariados from that set has an Ability that increases the opponent's Retreat Cost
