Yururu, Crystalline Conjurer

Whenever you cast a noncreature spell, you may counter it. If you do, exile it under target artifact
you own. The artifact gains: "Sacrifice this
artifact: Cast all spells exiled under it without
paying their mana costs."
Whenever an artifact you own with cards exiled
under it is destroyed by a source you don't
control, Yururu deals X damage to any target and
you gain X life, where X is the total mana value
of cards exiled under that artifact.