That looks like an odd way to show damage.
I thought that was the Shield spell at first, though that's assuming Magic Bolt is the same as Magic Missile. There is a Magic Bolt spell, but that requires an attack roll, which Magic Missile doesn't, and this was described as not needing one. Well, it's not exactly D&D here.
But you don't need to level up to level 4 to get 3 level 1 classes. You start with a level 1 class at level 1.
Well, he is the ultimate glass cannon himself anyway.
Yeah, I like that it's a low-level campaign. It's so fresh compared to what you otherwise see. So standard with end-game characters ready to curbstomp the extra boss after the final boss.
Probably won't work.
From what I've seen, it doesn't really follow any system exactly, so it can probably fit into several editions.
And then you have Disgaea.