Petra Sphinx [Legends] Khans of Tarkir Prerelease Promos Set: Ninth Edition Type: Artifact

Set: Ninth Edition Type: Artifact Rare Cost: {5} Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it

Set: Amonkhet Invocations Type: Instant Mythic Cost: {B} Search your library for a card and put that card into your graveyard

Set: Legions Type: Creature — Sliver Rare Cost: {3}{W} Whenever a Sliver deals damage

" —Argent Etchings

Petra Sphinx [Legends] Khans of Tarkir Prerelease Promos Set: Ninth Edition Type: ArtifactSet: 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?