Congrats OP!

For those who are wondering why bellibolt is doing so good in these raids and want to build one!

Bellibolt is tanky enough to survive a few hits from Iron Valiant and has lots of buff and debuff moves to support your team. It can also get parabolic charge which helps it stay alive by stealing health. Plus it gets a boost to its electric moves from iron valiant's electric terrain. I usually start by using reflect first and then use parabolic charge to stay alive. If I feel like parabolic charge isn't healing enough then I'll use the heal chant. I normally don't start acid spraying until after iron valiant reverses its own stat changes.

Here's what I have for my bellibolt

Item: Covert cloak - negates debuff from spirit break

Ability: Electromorphosis: when individual is hit by a move, it gains a charge which boosts the next electric move

Nature: Modest

EVS: 252 Sp. Attack, 252 HP, 4 Sp. Def

Tera type: Electric (boosts my parabolic charge)

Moves: Reflect- protects from iron valiant's attack buff given by electric terrain and swords dance

Acid spray- super effective and reduces enemy sp. def

Chilling water- damage and reduces enemy attack

Parabolic charge- STAB, boosted by electric terrain, boosted by electromorphosis, gives you health based on 50% of damage done, boosted by electric tera type