Haven't tested it yet because I really need to sleep, but I made a meme. Recently I've been continuing to read through the game's code and I learned the damage increase from fire SP is a bit interesting: It doesn't get increased or decreased by anything in the game except armour, resistance and ice SP, so with this build Irene has 3300 flat damage that only gets reduced by your armour or resistance. Barbarians on suicide watch, but you're safe for now because it's not in joint training yet.