Mizuki, Mother Owl

Each nonland permanent card in your hand has Disguise. (You may put this card face down onto the battlefield as a 1/1 creature with changeling and "this creature can't block" for {3}. Whenever it deals
combat damage, put a knowledge counter on it. At the beginning of your upkeep, if it has X or more
knowledge counters on it, where X is equal to its mana value, turn it face up.)
{1}{u}: Target Ninja can't be blocked this turn.