Wombo combo uses both your melee and grenade charge... any class using both their melee and grenade charge will kill. So that's a pretty bad comparison to a grenade that only uses your grenade charge and takes you out of the fight for 14 seconds. Not to mention if you don't land the wombo combo right on them, they can easily get out of it and therfore take less damage. Firebolt will always do the same damage no matter how far away you are from the center of the damage radius within its range. Firebolt itself isn't OP. Viking Funeral however lasts way too long.