Orange Justice

Enchant player. Every turn, enchanted player must do the MOST AWESOME DANCE OF ALL TIME. Oh yeah, and all of their creatures get 2 -1/-1 counters every turn. Enchanted player may choose another player. When they have completed THE MOST AWESOME DANCE OF ALL TIME, that player must rate that dance out of 10.
1-5 = the effect is as normal. 6-8 = the creatures of enchanted player get 1 -1/-1 counter instead of 2.
9-10 = the effect is cancelled.