Petra Sphinx [Legends] Demon Set: Alpha Edition Type: Artifact

Set: Alpha Edition Type: Artifact Rarity: Rare Cost: {4} {1}: The next time a source of your choice would deal damage to target creature this turn

Set: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {1}{G} Tap any number of untapped creatures you control

you may have it fight target creature

Set: Unlimited Edition Type: Artifact Rarity: Rare Cost: {1} Creatures with power 3 or greater don't untap during their controllers' untap steps

Petra Sphinx [Legends] Demon Set: Alpha Edition Type: ArtifactSet: 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?