Kiki-Jiki, Jelkav'rn Roamer

Admire. (Whenever this creature attacks, it gets
+X/+0 until end of turn where X is equal to
target creature's power that you control.)
Whenever an opponent casts a nonlegendary
creature spell you may pay {1}. If you do, create a
token copy of that creature. At the beginning of
your endstep, sacrifice the copy.