If you activate the mana ability of Shaun & Rebecca, Agents while in the process of casting a spell, activating an ability, or during a window to activate mana abilities when you're asked to pay a cost during the resolution of a spell or ability, you won't mill cards right away
Emry, Lurker of the Loch One of the best affinity commanders, Emry, Lurker of the Loch is a great artifact commander that easily comes down on turns 1-2
Equip your creatures with Cloud, Midgar Mercenary, and strike fast with Lightning, Army of One while Tifa Lockhart and G'Raha Tia, Scion Reborn make your hits strike home
Helldozer Helldozer isnt the most efficient creature in terms of rate and size, but if you can activate twice each turn to nuke two nonbasics, maybe your opponents will be pressed to do something about it very quickly