In which I show that Contrary Serperior is utterly relentless as long as you're not facing anyone with Ice Beam and a Focus Sash (Like Hilbert's Samurott, amusingly).

In this hack, Serperior's typing is changed from Grass to Grass + Dragon, which gives it access to Draco Meteor (And an amplified weakness to Ice moves). As its hidden ability inverses stat changes, repeatedly using Draco Meteor actually makes it stronger over time instead of weaker, which allows a potential sweep of the entire team if things are ordered properly.

Unfortunately, Serperior's Special Attack is insufficient to oneshot Zekrom on its own, which means it needs a boost from an item. The Draco Plate (1.2x boost) still isn't enough (This might be dependant on Nature, IVs, EVs, etc.), which means I'm left with either using Choice Specs or a Dragon Gem (1.5x boost). As the Dragon Gem leaves move selection unrestricted (And the boost is only needed once anyway), I use that.

I then immediately run into Hilda's own Contrary Serperior. With a Focus Sash, and Draco Meteor. But it also has a chance to use Calm Mind instead, despite its Contrary ability inversing the stat boosts. I'm then able to sweep the rest of her team with the exception of Carracosta (Which has Sturdy), whose Stone Edge still isn't enough to kill me, which means I can just finish it off on the second turn.

Hilbert and Hilda use the regular Trainer Battle theme in spite of being the absolute final Superbosses in the entire game, which I thought was a little underwhelming, so I patched the ROM to mute the track and played my own music instead (Music's name is Nachtflugel, otherwise known as Yozora's battle theme from Kingdom Hearts 3).

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