So you're not going to be Main Healer, just gonna heal him? Inertain group situations Destro is just as viable as Affltion, and in ft will drastally outdamage Affltion if doneorrtly.
Life tapping is not really the answer though. I don't know why you arn't going to be Main Healing, but sie apparently you're not you definatlyould throw him some extra mana, but it seems rather pointless when the other DPS would end up being Warrior and Hunter, in whhaseertain Totem drops would boost overall DPS more than feeding a lk while simultaniously not doing damage. The Lk just needs to have a good amount of fooddrinks handy and a good sized mana pool. Life tapping works wonderfully still, even with a reded hit point pool, but this is bause a Lkan run dry both HP and MP and then sit and Eat AND Drink, using Lifetap as a balaing tool to minimize downtime. You will lose some of the utility you would have had, but if you're playing well enough youan keep up DPS with a Mage whh is unheard of for a FltionDemo until high 50s. Just make sure to have the Lk using the right spells. Espially until later or on high-hp monsters, DoTs are worthless with the eeption of Immolate. The D and wasted mana will downplay the damageapability. Hell, even in very late game on regular monsters and weak Elites a Melee will
far surpass plain DoT damage, where Immo + Iinerateomes into play, just to keep up. Obviously if multle unCed monsters are engaged, tossing on Agony around will help your dps, as well. Give it a try, don't use Lifetap like an Affltion when you're not Affltion, though - play like a Mage who happens to have this wonderful balae tool.