Fell My salt in me says ENC should be able to mind control a group member's pet and do increased damage with it for a period of time. That way we are doing DPS, we require a DPS class to be there with us, we're in a group setting and we get to participate and so do they, they can buff their pet that I'm borrowing, win win.
In seriousness though, I'd say something along the lines of DOT's that perhaps end in a slow. Taking something like choke from EQ, that as it's choking there's a debuff attached to it beyond stat decrease, as more damage is done the slow increases. Nukes, where something is having its' brain melted leaves it unable to run or loses it's ability to use spells for a period of time or loses mana.
Instead of just combining buffs to make buffing easier, combine debuffs and offensive prowess for a new and novel effect. So that if I'm debuffing a stat I'm also doing relevant damage. Maybe Mezz can also be a mana drain to a certain percent or a short term snare after they wake up of like 1 or 2 seconds... Just spit balling here, but something that's better than buff botting.
Maybe something like how Wizards had Magic, Fire and Ice based spells for certain encounters. Enchanters could have different mind flaying type spells. A nuke that reduces melee attack speed, or reduces white damage. Another type of nuke or even dot that drains mana and hp at the same time. A lull that lowers resistances to magic, a mez that reduces mana or causes a snare effect.
This would be in addition to the spells already used, so the effects in my mind wouldn't be huge but noticeable. So it would be prudent in this scenario to not just slow a mob but also nuke for that added percentage on top. Helping the group, supporting in the same way but a bit better and helping with time to kill a bit.
