Blue Knight

Level up {1} whenever this creature levels up put a +1/+1 counter on it
1-2 Whenever this creature attacks tap target creature defending player controls
3-4 whenever this creature attacks put a stun counter on target tapped creature defending player controls
5 this creature's level up cost becomes {u}
6-7 Whenever this creature attacks tap target creature and put a stun counter on it
8-9 Whneveer this creatre attacks put a stun counter on each creature defending player controls
10 Whenever this cre