Gargalith, Dead Ringer

Flash
If a creature an opponent controls would fight
another creature you control, you may have it
fight Gargalith, Dead Ringer instead.
Whenever a creature you control dies, if it fought
this turn, you may pay {1}{b}{b}. If you do, return Gargalith from your graveyard to the battlefield.
It gets +3/+0 until end of turn. Then it fights
another target creature.