Arcane Sanctum enters the battlefield tapped. {T}: Add {W}, {U}, or {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.)

Flying When Magister Sphinx enters the battlefield, target player's life total becomes 10.

Flying When Shattered Seraph enters the battlefield, you gain 3 life. {2}, Exile Shattered Seraph from your hand: Target land gains "{T}: Add {W}, {U}, or {B}" until Shattered Seraph is cast from exile. You may cast Shattered Seraph for as long as it remains exiled.