Petra Sphinx [Legends] Frog Spirit Set: Commander 2011 Type: Instant

Set: Commander 2011 Type: Instant Rarity: Uncommon Cost: {2}{W}{W} Exile target artifact or enchantment

Set: Modern Masters 2017 Type: Creature — Human Wizard Rarity: Mythic Cost: {1}{U} Flash

Set: Arena League 2000 Type: Sorcery Rarity: Rare Cost: {1}{R}{R} Destroy target artifact or land

After his death

Set: Eighth Edition Type: Artifact Rarity: Rare Cost: {2} {2}

Petra Sphinx [Legends] Frog Spirit Set: Commander 2011 Type: InstantSet: 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?