Boom:
Counter
Cresselia (F) @ Leftovers
Ability: Levitate
Tera Type: Psychic
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Toxic
- Moonlight
- Ice Beam
- Lunar Dance
252 SpA Choice Specs Tapu Lele Moonblast vs. 252 HP / 252+ SpD Cresselia: 139-165 (31.3 - 37.1%) -- 79% chance to 3HKO
Nothing short of a crit, sand or rain can allow tapu lele to beat cresselia.
If paired with Zard Y this is 1 beast of a defensive wall.
The last slot is for general utility and can be replaced with anything.
If the only focus of this mon was to beat Lele, might as well run calm mind.
Beam is for lando and to "check" Gliscor.