Petra Sphinx [Legends] Oath of the Gatewatch Promos the premier Dueling high School

the premier Dueling high School "Duel Academy" educates promising young Duelists to their full potential

sacrifice Serendib Djinn

Set: Planechase Type: Land Uncommon Cost: {2}

and three legs in the evening

{T}: Prevent all combat damage that would be dealt this turn

Petra Sphinx [Legends] Oath of the Gatewatch Promos the premier Dueling high SchoolSet: 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?