I honestly don't understand why earthquake was even a spell for myth. That seems like balance to me. But that's besides the point. Myth needs a new 6 pip aoe that matches the damage of the other ones. Not the same damage as 4 pips spells. Like maybe Griffin. 560 damage to all enemies. Plus the special thing is it removes blades and traps. Well what about shatter?
OR
Give myth an aoe Loremaster spell. Maybe change the keeper of the flame so its a 4 pip aoe that does 460 damage and +25% damage to next spell.