Wagnard, Unparalleled Evil

Sacrifice a creature: Regenerate Wagnard

Sacrifice a non-token creature: Return target creature from a graveyard to the battlefield under your control with a finality counter on it. You lose life equal to that creature's mana value. If you control three or more legendary artifacts you lose 1 life instead.

Whenever a creature leaves an opponent's graveyard, gain 1 life.