Petra Sphinx [Legends] Core Set 2019 if this creature is in

if this creature is in your graveyard

Card TypeLegendary Creature — Elemental

creatures target player controls lose all abilities and have base power and toughness 0/2

sacrifice Vaevictis Asmadi unless you pay {B}{R}{G}

Petra Sphinx [Legends] Core Set 2019 if this creature is inSet: Legends Type: Creature Sphinx Rarity: Rare Cost: {2}{W}{W}{W} {T}: Target player chooses a card name, then reveals the top card of their library. If that card has the chosen name, that player puts it into their hand. If it doesn't, the player puts it into their graveyard. What walks on four legs in the morning, two legs in the afternoon, and three legs in the evening?