Muxraga, Primeval Cycle

Deathtouch, Lifelink
{b}{b}, Sacrifice a creature: You gain life equal
to the sacrificed creature's toughness.
{g}{g}, Pay X life: Return target creature with toughness X from your graveyard to the battlefield.
You may play Muxraga, Primeval Cycle from your graveyard by paying 6 life in addition to its
other costs.