'The hell are you doing you stupid...' MarKus gets to think to himself a moment before noticing the guy's arms and such swelling up.

"Oooh... Hey kid, when you're done with that... aim for your sword next." MarKus orders as he hops off his chocobo and goes as far to steal Ib's sword. "I'll make you a new one! Gundam, stay with the girl!"

The giant bird squawks out and backpedals a bit, turning Ib into a spellcasting turret. MarKus himself hurries in while Luffy and Yuna work to do... "the thing" and Sephiroth wails. The Blacksmith heads for one of the machine's legs and, upon finding a joint, he jams the sword into it. To pile on the effort he uses his hammer to smash it in further!

MarKus proceeds to do his own thing, trying to steal parts of any fashion off the machine before reeling back and unleashing a wrenching swing of his hammer in the form of his Tool Blast one time before scampering off out of range of the next slew of lightning spells. With the sword jammed into it's leg acting like a lightning rod, it just needed a little magical juice to do it's job!