Brand Enemy (paladin) doesn't deal crazy damage per tick, but enemies can't get rid of it. It's permanent, it doesn't count as a fire ability so water won't dispel it (but it also won't dispel water). It casts super fast and has decent range, so you can get the dots rolling easily. Tip: Empower self to get zeal to dot even more targets - can't empower the brand anyway.
It works really well with tanky setups. It's what I've been doing over and over. If enemies aren't fire immune and don't have continuous access to healing, I'll brand some priority targets and bunker up.
I have thought about making a 3 per paladin tank that just uses branded enemy abusing the fact it has no accuracy roll. Multiclass with another class for more spells and then just do nothing but heal/buff. MIGHT/INT/RES can be maxed out while per/dex is dumped.
Druid has the most powerful DOTs. They are made even stronger by alchemy buffing poison spells. This makes plague of insects the most powerful DOT spell of all. Big AOE, raw damage, and massive accuracy/damage/duration from 20+ power level boosts.
Quite a few enemies are poison immue though, so it won’t always work. Luckily, druid has a wide variety of damage types they can inflict.
Returning storm is good for the stun effect, but it only hits one enemy at a time making it far less damaging than other AOEs.
Anything that has multiple accuracy rolls will do better since they are less devestated by a bad roll.
One thing the consider is that fortitude tends to be the hardest defense to hit, by quite a bit usually. Also, some spells have terrible penetration. Chill fog, for example, has really low penetration. It is still a great spell, though.
Edited by Braven, 14 June 2018 - 04:55 AM.