Latias

When going for trades Mist Ball's damage reduction makes it safer for you to enter in range for Dragon Pulses. Shell Bell aims to keep HP topped off incidentally. Cooldown reduction is valuable to maintain uptime on the debuffs as well as allowing quicker stacking of Eon Power. Resonant Guard acts in a similar way to Shell Bell but without cooldown reduction and without needing to hit a move to proc (ie: an auto attack can proc Resonant Guard) and has early game ally support as an alternate item to Drive Lens.

Shell Bell aims to keep HP topped off going for trades and giving CDR, being able to proc approximately once every two Dragon Breaths. Cooldown reduction is valuable to maintain uptime on the debuffs as well as allowing quicker stacking of Eon Power. Resonant Guard acts in a similar way to Shell Bell but without cooldown reduction and without needing to hit a move to proc and has early game ally support as an alternate item to Drive Lens. In a poke centric composition or vs poke, the ability and time to farm wild Pokémon is reduced and EXP Share can be considered but is undesirable. This set's debuffing opponents offensive and defensive power wants you and your team to move forwards thus putting you in exp range of farm or KOs.

Shell Bell aims to keep HP topped off in a poke war, being able to proc approximately once every two Dragon Breaths. Resonant Guard acts in a similar way to Shell Bell but without cooldown reduction and without needing to hit a move to proc. Cooldown reduction is valuable to maintain uptime on the debuffs as well as allowing quicker stacking of Eon Power allowing for an alternate item of Drive Lens. Due to the nature of the moves, Curse Incense is not optimal but should be used if no one else on the team has it. In a poke centric composition or vs poke, the ability and time to farm wild Pokémon is reduced requiring the use of EXP Share to keep up.

Personal survivability is increased through special attack increasing Dragon Cheer shield and heal values of Dragon Pulse. Shell Bell variant emphasizes cooldown reduction for frequent Dragon Cheer shields and casts of Dragon Pulse. Shell Bell heal is tied to Dragon Pulse as Dragon Cheer cannot activate it. Resonant Guard variant allows for more agression early and better ally support. Due to the nature of the move set, Curse Incense is not as strong but should be considered if no other team members are using anti-heal.