Well, it seems like an okay enough card, if not a tiny bit expensive.
It's basically like a mass lobo I guess.
But it also seems somewhat situational, and it's high cost makes it a bit less usable compared to, say, pandemonium.
Lobo is used in decks because it is a very useful ability that boosts your win rate with a relatively low upkeep, and if you don't need to use it, at least it still does damage.
If you add in an effect that damages creatures that have their effect removed, like maybe 1 or 2, it would be much less situational and give more of a reason to add it to your deck.
EDIT: I reread the card, and since it affects your creatures too, I would definitely make it less expensive, or make it target opponent's creatures only.
