[Stanis]

At least spam SL and corruption on everyone, plus full dot the target. If the other team leave you alone , I would throw in some mana drain and SB if it proc) on their healer.
It's hard to tell 'what to do' , it really depends on the other team and the strategy. If you want to burn them, CC and max damage , if its a long fight, killing others pets or CoT on the frost mage pet plus mana drain usually pays off.

-Stanis