Viper

+1: Every enemy Creature gets -1/-1 and loose:Doublestrike,Firstsrike,Reach,Indestructible, Hexproof and Flying untill end of turn
-X: Destroy enemy creature with Toughness X
-8: Gain a Token with: As long Viper is on the Battlefield every Enemy creature gets -4/-4 and all enemy creature ability's are disabled.