Asuki, Mass Armed Oni

Eminence- If Asuki, Mass Armed Oni is in the command zone, you may search your library for a demon creature card, reveal it, put it in your hand. Shuffle your library.
Double strike, hexproof, Khabal (Whenever another creature dies, put a +1/+1 counter on this creature.)
Demon cards cost {1} less to cast.
Asuki, Mass Armed Oni may attack two creatures if able.
She can kill you six ways to Sunday.