Mage Polymorph - Wotlk

[sewwerew]

Havin a issue with Polymorph.
Here's the scenario :
2v2 arena, Poly is used, he trinkets. poly again. what happens next? His team mate - pala/priest/shaman/druid. Dispells it....
Does polymorph can be dispelled? i think no, cause its not a curse,dissease or
Any explonation? mby iam a bit short on information?

[dolcokidol]

It's a magic debuff and can be dispelled by priests and paladins.