Ptah, God of Craftsmen

Hexproof
{u}{w}{g}{t}:Create a token copy of Ptah, God of Craftsmen. You may treat creating that token as casting it
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.)