Either you get a fast regen on yourself, or you just ignore the DOT's, while you're going for their action efficiency = Battleforge + Familiar.
Their biggest advantage would be Vet belt with 3+ armor.
Just make sure that you're able to dissolve vet belts and mage wands as your main prio while beating down their mage. If you've creatures, make sure they don't hit into the belt and that you can start using jinx etc to gain an advantage.
Having at least 2 null, 2 jinx, 1 purify and 1 purge magic/destroy magic will make you able to challenge the dots with incantations if needed.