Petra Sphinx [Legends] Commander's Arsenal Set: Pro Tour Collector Set

Set: Pro Tour Collector Set Type: Enchantment — Aura Rarity: Uncommon Cost: {1}{B} Enchant creature card in a graveyard

[DD] Dark Rush (20x)

Set: Arabian Nights Type: Creature — Efreet Rarity: Rare Cost: {2}{U} Flying At the beginning of your upkeep

Whenever Phage deals combat damage to a creature

Petra Sphinx [Legends] Commander's Arsenal Set: Pro Tour Collector SetSet: 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?