Kai and Kio, Izzet Battlemages

Eminence - At the beginning of your upkeep, as
long as Kai and Kio is in the command zone or
on the battlefield, choose Power or Knowledge.
If you chose Power, other creatures you control
get +2/+2 until end of turn. If you chose
Knowledge, whenever you cast an instant or
sorcery spell this turn, copy it. You may choose
new targets for the copy.
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)