I have a new policy of putting one random Ninja with the ninjutsu ability into any deck that has room for another card, irrespective of any other mechanics or tribal synergies. Mono-Blue Wizard tribal with a card draw engine? Ninja! Bant flicker? Ninja! Dimir mill? Ninja! Temur ferocity? Ninja!
My goal is to inspire in my girlfriend a deep and abiding sense of paranoia, a pernicious feeling that every time she walks past a closet, cabinet, or cupboard, a ninja might suddenly spring out and attack. Think Cato Fong from The Pink Panther, but with less overt racism.
Anyway, here are all the decks I’ve built containing or themed around Ninjas. Have fun and watch your back!