Glitz Pit Strategy Contest - Shadow Sirens 1 (#2)

Shadow Sirens 1
Condition: Deal as much damage as possible in one move.
10HP/5FP/12BP (Level 4)
Badges: Fire Drive, Power Plus, Mega Rush, Hammerman, Double Pain
Items: Power Punch, Dried Shroom
T1: Power Punch
T2: Dried Shroom [Guard Beldam]
T3: Fire Drive [Merlee]
Power Punch obtained from Spiky Goomba drops.
Only external condition is no badge drops (otherwise, Power Rush stacking is a thing)