Exhaust Resources

Convoke

Draw cards, gain life, and create a number of tapped treasure tokens equal to the amount of mana spent to cast this spell.

Lands tapped to cast this spell become wastes; creatures tapped to cast this spell become colorless, have base power and toughness 1/1 , and lose all other abilities; and noncreature permanents tapped to cast this spell become colorless powerstones.