Sharn, the Scrying Shifter

Eminence - On each players end step, scry for as
many cards been drawn that turn. Whenever a
creature spell is cast you may pay {2}. That creaure
is now a changeling. (Every creature type.)
• Correctional behaviour-{w}{u}{g},{t}:Target creatures
power reduces to 0 for the remainder of turn.
• Friend to all-{w}{u}{b}{r}{g}:Scry X times, where X
is the total number of changelings. Draw 2 cards.
• Mediate-{5}{u}{u},{t}:Prevent all combat damage
this t