[fixed]AI doesn't get Muzzle-creature makes 0 damage

Describe the Bug:
1- AI doesn't play Muzzle in many different games and scenarios.
2- AI, when it's creature is enchanted with Muzzle AI doesn't get that it will deal no damage and attacks in vain.
I don't know if it is a coincidence or general AI behaviour (we know that AI likes to enchant same creature with extra prevent attack/prevent damage auras) but 2 times in a raw AI thought that AI's creature and my creature that were already enchanted by Muzzle I played,were good targets for Cage of Hands and Faith's Fetters.The latter was cast on AI's creature while I had a fat flier which AI couldn't block.
Which card did behave improperly ?
Muzzle
Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink 2016/08/07: Eldritch Moon, duel
What exactly should be the correct behavior/interaction ?
Are any other cards possibly affected by this bug ?
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2- AI, when it's creature is enchanted with Muzzle AI doesn't get that it will deal no damage and attacks in vain.
I don't know if it is a coincidence or general AI behaviour (we know that AI likes to enchant same creature with extra prevent attack/prevent damage auras) but 2 times in a raw AI thought that AI's creature and my creature that were already enchanted by Muzzle I played,were good targets for Cage of Hands and Faith's Fetters.The latter was cast on AI's creature while I had a fat flier which AI couldn't block.
Which card did behave improperly ?
Muzzle
Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink 2016/08/07: Eldritch Moon, duel
What exactly should be the correct behavior/interaction ?
Are any other cards possibly affected by this bug ?
-