Oni Seducer

Hexproof
Poisonous 1 (Whenever this creature deals
combat damage to a player, that player gets a
poison counter. A player with ten or more
poison counters loses the game.)
Ninjutsu {b} ({b}, Return an unblocked attacker
you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
{1}{b}{b}{b}: Destroy target creature.