Pandemonium — Withdraw a land you control (You may pay an extra pandemonium cost as you cast this spell.)
If the pandemonium cost was paid, Pandom Freezer enters with a chaos counter.
Frostbite (When this object deals damage to a permanent, freeze that permanent.)
When Pandom Freezer deals damage to an opponent, if it has a chaos counter, freeze a random permanent that player controls.
Enroll — Exhaust a creature (Pay the enroll cost: This Campaign becomes also a creature until end of turn.)
Five abilities and a lot of effort. I start to feel the chaos counters are causing more words than it is worth.
This would be a lot of text even on a plain creature without the need of an enroll clause Campaigns come with. I suggest keeping this use of pandemonium of Campaigns/Vehicles/Auras/Equipment that come with an inherent need for a line/paragraph of ability to function.