Bayonetta, Timing's Witch

Whenever Bayonetta deal combat damage to a
player on an opponent's turn, put a umbra
counter on Bayonetta. If Bayonetta has 5 or more
umbra counters it, you may cast spells as though
they had flash and opponents cannot cast spells
during combats that Bayonetta attacks.
Bayonetta has +1/+1 for each spell cast this turn
and has deathtouch, haste, and flash.
Bayonetta can attack anytime you could cast an instant and only once a turn.