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Mold Adder | Creature | Fungus Snake | Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on Mold Adder. | Matt Cavotta
Mild-Mannered Librarian | Creature | Human | {3}{G}: Mild-Mannered Librarian becomes a Werewolf. Put two +1/+1 counters on it and you draw a card. Activate only once. | Justyna Dura
Snakeskin Veil | Instant | | Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.) | Dan Murayama Scott
Wildwood Scourge | Creature | Hydra | Wildwood Scourge enters with X +1/+1 counters on it.
Whenever one or more +1/+1 counters are put on another non-Hydra creature you control, put a +1/+1 counter on Wildwood Scourge. | Bryan Sola
