Sephiroth, Fabled SOLDIER (Borderless) #317

Whenever Sephiroth enters or attacks, you may sacrifice another creature. If you do, draw a card. Whenever another creature dies, target opponent loses 1 life and you gain 1 life. If this is the fourth time this ability has resolved this turn, transform Sephiroth.

Flying Super Nova — As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with "Whenever a creature dies, target opponent loses 1 life and you gain 1 life." Whenever Sephiroth attacks, you may sacrifice any number of other creatures. If you do, draw that many cards.