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Just to respond to Sun King, I hardly think SD Sharpedo would be broken. Its defenses are paper thin, like it dies to uninvested BB from Skarm after rocks iirc, so with this I don't think it could find many set-up oppurtunities. And with this, anything that can live one boosted hit can basically revenge it. And unlike Blaze, it lacks BP so it can't pass its speed and SD boosts.
I'm not open to buffing Infernape AGAIN, and same goes for Entei--it's already won one.
Sharpedo is definitely something I'll look into, but It could be broken in tandem with Speed Boost. Not sure if the 4MSS mitigates this.