Spontaneous Jester

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
You may cast Saga spells as though they had
flash.
Whenever you cast a Saga spell, you may have
Spontaneous Jester gain your choice of vigilance,
first strike, or unblockable until end of turn.
Completely unpredictable.