Bro thinks he cooked.... There's no use of bulking hoopa with max max hp def when u can't ko with ice punch after 1 speed drop on landorus-t.136 Atk Landorus-Therian U-turn vs. 252 HP / 236+ Def Hoopa-Unbound: 308-364 (84.6 - 100%) -- 6.3% chance to OHKO
-1 20 Atk Hoopa-Unbound Rock Tomb vs. 8 HP / 196 Def Landorus-Therian: 39-47 (12.1 - 14.6%) -- possible 7HKO
-1 20 Atk Hoopa-Unbound Ice Punch vs. 8 HP / 196 Def Landorus-Therian: 200-236 (62.3 - 73.5%) -- guaranteed 2HKO
252 Atk Landorus-Therian U-turn vs. 252 HP / 252+ Def Hoopa-Unbound: 328-388 (90.1 - 106.5%) -- 43.8% chance to OHKO
-1 4 Atk Hoopa-Unbound Rock Tomb vs. 8 HP / 196 Def Landorus-Therian: 39-47 (12.1 - 14.6%) -- possible 7HKO
-1 4 Atk Hoopa-Unbound Ice Punch vs. 8 HP / 196 Def Landorus-Therian: 196-232 (61 - 72.2%) -- guaranteed 2HKO
Uh when I use basic mathematics, rock tomb + ice punch damage according to ur calc is 14.6 + 73.5 (highest rolls) = 88.1%.