>>41341939ftfy
The final boss Necrozma can't use Z moves, and the final boss Eternatus doesn't have items. Necrozma has a 1.2% chance to 2HKO Eternatus but Eternatus has a guaranteed 2HKO if using Dynamax Cannon (capture says Core Enforcer but it has the same battle power, type and precision so it's valid), and that's using NORMAL moves, not the Max moves Eternamax Eternatus uses