MMBN5: Wrath of Dark Soul AI 

The ABD (Auto Battle Data) Tactic. That is what they called this Dark Soul AI manipulation in one of the guidebooks. By just using those chips and no other, the DS AI is locked into spamming these powerful chips (the notorious uses being BigNoise and DarkThunder). Using e-Reader cards to set up a strong modified buster set, it's possible for a player to still hold this set-up far into the game. Shadow Chaos Unison should also work with this, should you switch to the light side.
Due to how broken this was, the DS port of the game has removed the spamming and limited the AI's chip use.