Forging Flames

Whenever you cast a noncreature spell, you may
pay {u/r}, if you do, create an X/X blue and red Elemental creature token with trample and haste,
where X is the amount of mana spent to cast that
spell. Exile that token at the beginning of the
next end step.
Vast amounts of energy collect around the Ocean
Forges' crystal formations. When the energy overflows, elementals are born.