Enigma Sphinx [Planechase 2012] Duels of the Planeswalkers its controller adds an additional

its controller adds an additional one mana of any color

Nahiri's Wrath deals damage equal to the total mana value of the discarded cards to each of up to X target creatures and/or planeswalkers

Set: Tenth Edition Type: Sorcery Rarity: Uncommon Cost: {1}{R} Draw four cards

it leaps between gravestones in search of its next meal

" —Taani

Enigma Sphinx [Planechase 2012] Duels of the Planeswalkers its controller adds an additionalSet: Planechase 2012 Type: Artifact Creature Sphinx Rarity: Rare Cost: {4}{W}{U}{B} Flying When Enigma Sphinx is put into your graveyard from the battlefield, put it into your library third from the top. Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)