Ravenous Doppelganger

{t}: Ravenous Doppelganger deals 1 damage to
target creature.
{c}: Ravenous Doppelganger becomes a copy of
target creature until the end of the turn. This
ability may target only creatures Ravenous Doppelganger has dealt damage to this turn.
"Your tricks won't work on me, hero. Though I
suspect they may work on you."