Defense Curl boosts the base power for Ice Ball with a 2.0× multiplier
Helping Hand strengthened the power of Ice Ball with a 1.5× multiplier
Shuckle's Pure Power boosted its Attack with a 2.0× multiplier
Shuckle's partner's Flower Gift boosted its Attack with a 1.5× multiplier
Shuckle's Metronome strengthened the power of Ice Ball with a 2.0× multiplier
Shuckle gets the Same Type Attack Bonus (STAB) for Ice Ball
MAXIMUM DAMAGE: 26,737,002
26,737,002 x 1.5 (additional Flower Gift) = 40,105,503
40,105,503 x 1.5 (additional Helping Hand) = 60,158,254
60,158,254 x 1.5 (new Critical Hit multiplier) = 90,237,381
90,237,381 x 8 (3x Weakness) = 721,899,048
I wonder if there's any new way for Shuckle to deal more damage in gen 7