Emberstone Blast

Emberstone Blast deals 3 damage to any target.
If mana from a colored mana source was spent
to cast this spell, it deals 4 damage instead.
"In the shadows of Mysthaven, where despair once reigned, Krag's defiance blazed brighter than the Emberstone itself. Seren's tyranny dissolved in flame, heralding a dawn forged by courage and the will of the indomitable."