Galahar, Inferno of Dlukt

When Galahar enters the battlefield, it deals three damage to every green or blue creature.
{x}{r}{r}{r}{t}, Galahad deals X damag to target creature.
{x}{r}{r}{r}{r}{r}{r}{t}, Galahad deals X damage to target player.
What lies in the deepest depths? With arms of fire? Galahad, who just wants to give warm hugs!