Robo-Kitty 2.0

Flying, trample
Modular 1 (This creature enters the battlefield with
a +1/+1 counter on it. When it dies, you may put its
+1/+1 counters on target artifact creature.)
Pounce (Whenever Robo-Kitty attacks, you may
pay {1}{u}{u}. If you do, target creature defending
player controls gets -X/-0 until end of turn, where X
is Robo-Kitty's power.)