Mirkwood Trapper
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Trappeur de la Forêt Noire (Mirkwood Trapper) (fr)

Creature - Elf Scout | Power/Toughness: 1 / 4 (CMC 3)
Whenever a player attacks you, target attacking creature gets -2/-0 until end of turn.
Whenever a player attacks, if they aren't attacking you, that player chooses an attacking creature. It gets +2/+0 until end of turn.