Let me get this straight here. This is a bard friendly unit (one to all stats per turn) who also boosts it’s own attack and magic every turn, so +2 magic per turn, who does multi-target damage boosted further by 1/4 of the combined attack stat of every unit alive on either side, which is one of the harder stats to reduce with a typical team, targets the weakest enemies to deal this damage with, and on top of that auto-kills the other one if either of them is killed. All for the obscenely low cost of 22 mana; 11 with Ishbaala?
B. R. O. K. E. N.
Edit: to be more productive, the problem I see with this unit is that it gets to have it’s cake and eat’s it too. It’s cheap to cast for the spell damage, can start with extra-low mana cost, scales with enemy stats, grows more powerful over time on it’s own, synergies with another stat booster, and has an auto-kill effect. It’s like it was specially crafted to be good at everything. It needs a weakness, and the only real “weakness” it has is barrier, except that barrier is trivial to break and it really isn’t so much a “weakness” as it is a mild inconvenience that any troop would have equal problems with. It needs to either cost more to cast, or do less in my opinion. Being able to be cast in two matches is insane for as powerful a spell as it has.