Televran, Sorcery Incarnate

Flying, Prowess
Whenever you cast a noncreature spell, add one
mana of each of that spells colours to your mana
pool.
{w}{u}{r}{x}{x}: Televran deals X damage to any
target, if a creature dies this way and excess
damage was dealt, deal damage equal to the difference to each other creature it's controller
controls.