What you were expecting to happen, and what actually happened:
Something is very wrong with Soulburn 2. It seems, it hits the very first slot only, and has no effect, if there is no one there.
How often does this happen? When did it begin happening?
Just noticed. But I never used the Phantom Fox before.
Steps to make it happen again
Cast Soulburn II
Expect no damage, except troop in the first slot (upd: first two slots) - not the first two enemies.
P.S. Also, Mana Burn effect must be boosted by caster magic, right? I have 31. And on last screenshot it’s obvious I hit the enemy for 9 damage. As he is under Fairy Fire, it’s 6 for mana +50% for Fairy Fire. No caster magic involved at all?
P.P.S. Also, I have Crystal Medal equipped (+160% to Skull and Spell damage). Is Mana Burn excluded from its effect?
The bug is either not fixed yet, or was fixed but then re-introduced somehow. Phantom fox’s mana burn is still not boosted by its magic stat, as of 2023-12-16.