Jayce, Hextech Engineer

Hexproof, Vigilance

Whenever a player casts a noncreature spell, create a Hexstone token.

Whenever a player casts a creature spell, create a treasure token.

{r}{g}{w}{u}, {t}: Sacrifice X Hexstone tokens. Gain X life, deal X damage to an opponent, destroy target creature with mana value X or less, and draw X cards