“Arcane Overflow on the other hand, does NOT say it converts the excess damage. It doesn’t say the excess damage becomes a minion, it says a minion is summoned with stats equal to the excess damage” - by that logic any spell that does enough damage to kill Korrak shoul permanently remove him, as he was killed by the required amount (and ‘excess damage’ was generated as a by product). The fact is AO doesn’t say it generates excess damage… Just that you get a minion with stats equal to the difference between the damage dealt and the tagets health. 