Petra Sphinx [Legends] Oath of the Gatewatch Promos sacrifice Koskun Falls unless you

sacrifice Koskun Falls unless you tap an untapped creature you control

Set: Core Set 2019 Promos Type: Legendary Planeswalker — Sarkhan Mythic Cost: {1}{R}{R} +1: You may discard a card

and three legs in the evening

sacrifice a land and discard your hand

Petra Sphinx [Legends] Oath of the Gatewatch Promos sacrifice Koskun Falls unless youSet: Legends Type: Creature Sphinx 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?