Ulvenwald Mysteries can be part of a dedicated Clue plan, giving us a free 1/1 token for every Clue cracked, in addition to providing us with a plethora of Clues over time (since many of our creatures are going to give us Clues unless they die, and if they die, then the Ulvenwald Mysteries will give us Clues as to what happened)
The creature gains "This creature doesn't untap during your untap step if it has a fungus counter on it" and "At the beginning of your upkeep, remove a fungus counter from this creature." Mire Shade Rarity: Uncommon TYPE: Creature SUBTYPE: Shade CMC: 2 Mana cost: USD: $0.15 EUR: 0.12 TIX: 0.09 EDHREC RANK: 31279 (1/1) , Sacrifice a Swamp: Put a +1/+1 counter on this creature
This is not the case anymore, since there were a lot of bad updates and the game is in a steady decline
So far, all of the battles previewed have some sort of enters the battlefield effect on the front side, which acts sort of like a sorcery that then creates this altered game state where your opponent now has this position they must defend