Ethersworn Sphinx is a uncommon Artifact Creature — Sphinx card from The List (PLST), collector number MH2-195.
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Flying Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card with lesser mana value. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)