Someone called this a small brained move

So apparently taking out Grym in two turns or less and not using the far harder hammer to kill it in MAYBE 6 turns.

Let me drop a huge hammer on a target that only takes damage while heated by lava that I have to lure it over to and throw a lever just to hit it once and then its invulnerable again plus I just summoned mephits.

Vs.

Let me trap this thing next to the source of Lava not allowing it to leave the lava while I haste 2 fighters and a raging barbarian equipped with hammers killing it in 2 turns or less.