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Not sure where to post this since it affects multiple generations up to and including sw/sh but a recent finding on serene grace+charge beam+the water/fire pledge effect.
When charge beam is stacked with serene grace and rainbow field condition (fire+water pledge), it seems to cause an overflow...
We take Those: https://replay.pokemonshowdown.com/gen8doublesou-1302761988-x3nvyw9us8ucjvyo63llmikf2ncp6cmpw
Ashes to Ashes: https://replay.pokemonshowdown.com/gen8doublesou-1306607311-cjivfvq67njroap3f0jidlf4u00dxi3pw
Why so Hurry? (took over 150 games for this one wtf)...
Big Bang Dragon Fist
https://replay.pokemonshowdown.com/gen8doublesou-1281405335-0mpk9x1pts4icskkfvm7t3c2nmwsb0bpw
Ashes to Ashes
https://replay.pokemonshowdown.com/gen8doublesou-1271326179-jr6xp3zwbz7emvvh4z6kwyssegtpsdhpw
Heavyweights...
You Leave Me With No Choice!, Olympus Mons, Quick Finisher, Attack! Attack! Attack!, Onibaku Combi
https://replay.pokemonshowdown.com/gen8doublesou-1238373581-ey2v0ipd612i9k9wdr7f2flv4vuw1jgpw
Greed Pays Off Sometimes, This Ain't STABmons...
This seems fun
Underrated, Super Underrated, Where He at Doe? (or is 4 not acceptable), In Practice, Heathen
https://replay.pokemonshowdown.com/gen8doublesou-1237780013
Stack 'em Up, Pacifist, Preservationist...