Hmmm... Oni. One of my favorites, second after Marignon
First - Oni don`t need supplies, so you can set supplies to 50 (looks like cheat. but may be very useful against non-nature players)
Second - Brutal magic. Forging and magic rush with SC mages. Right, they`re ecu is poor, but some light armor and artefacts would help. I usually boost main (highest) magic skill with artefacts and at the end of game forge Rings of Sorcery
Third - Mighty magic of Oni is an easy way to my favorite style: creating large summoned armies. Oni with high D-skills can summon Tartarans and Legions of Wights. High E-skills leads to Iron Dragons, the deadliest unit in game. High F-skills give no powerful units, but Fires from Afar is rather deadly spell. Sure, for such overmagic game you need powerful astral mages (for total Acasic Record) and large/huge map with over 150 provs under control and 300+ all (I play 300+ vs Players and 450+ vs AI)
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Gregstrom, to prevent Pangaean "Minotaur Rush" Oni can recruit as many troops as possible and pillage provinces to continue expensive upkeep. It`s possible, but too hard. They`re not rushers
But in game with 300x300x50 they have a chance