Hello.
Here's a basic skinny on this issue:
Necro vs Conjs, main diffrence, augmentation spells. Necros get alot of party spells, but that doesn't mean they arenot similar to Conjs, hardly. Conjs and Necros share alot in common, esp when you consider that necros are the evil counterpart of the Conj. With that said let me say this:
As a lvl 31 Conj i have the following spells that i use all the time:
1. 2 DD spells (Spiked Rain, which is a minor DoT; Dust Blast Adept 3 which does between 62 and 200 damage).
2. 2 Pure AoE's, encounter locked (doesn't affect outside targets): Storm of Lightening (at app4 does about 30 damage no matter the level of the mobs); Shards of Ice (does about 80 damage at adept 3, regalrdles of mob level.)
3. DoT's, that is what a Conj is about, pure DPS on that issue: Static Pulse (adept 3) does about 12-20 damage. Bludge Earth (adept1) does about 25 damage. Seism (adept 3) does about 50 damage. Shattered Ground (adept 3) does about 80 Damage. Tremor (app4) does about 80 damage.
4. Stuns, and we love them: Arcane Bindings (works nicely for low level mobs (lower than white). Imoblize (works great on white and yellow mobs). Petrify (great quick cast petrify at adept 3 lasts 15 or so seconds). Frozen by Time (great spell, hardly anything resists it, stuns for about 5-10 seconds dependant on level)
5. Fire Seed Adept 3. When proced does 80 damage to the target attacking. If target dies while being hit with fire seed the group mob is damaged for same amount.
6. Pets, and i have alot lol My 2 main pets are the Tellurian Soldier Adept 3 (group ae taunts, as well as knockdown spells) Great tank that procs 3x damage at start and end of the fight, plus nice damage (60-120) every second. and my Adept 2 Savant. Mage caster that replaces the igneous apprentice. This caster does group aoe fire spells, as well as a fire DD. Plus you get the nice Group Buff.
7. Invisiblity Adept 3. Don't know if it is a fluke, or if they will nerf this, but i can invis my whole group, granted within about 3 minutes as the recast time is 30 seconds lol But, the great thing is it is a real invisiblity, unlike summon shaddows and stealth, not much sees through this, and our speed is only SLIGHTLY instead of MASSIVELY decreased.
8. 2 Pet Heals: Sooth Servent (259 Heal at adept 3), and Repair Servent (295 Heal at app4). Pet doesn't die that often anymore.
9. 2 Pet Buffs: Agitation adept1 and Provocation Adept 1 (both are wonderful buffs, makes the Soldier really a formidable pet as the latter heals for 55 every second, and the previous holds power and hp pretty high.
10. Group Buffs: Sonus Boon of the Magi (hp/power), Aluvial Brand (int and fire mitigation, plus sta i think, i'll have to check on that.) Pollution (nice buff, but puts conj at risk for hate.)
Plus, we can drain our power quite a few times per encouner when we get low. While the group is usualy out of mana, i'm still there casting, constantly my ae's and dot's, doing more and more damage as the time goes by. Instant Vim and Essence Shift are wonderful power pullers.
Plus you get a replacement (tho i add it as a stack) flame dot at lvl 31, at app1 it does 45 damage per second and then explodes at the end for about 110-125 damage, and has a very fast recast time.
Not to mention the secondary affects of all our spells: Spiked rain, for xample is an AC debuff. Shattered Ground stifles a caster. Tremor debuffs arcane mitigation making the mob easily suceptable to magic DD attacks.
The simple skiny: As all of our DoT's and all of our AoE's are encounter locked spells, it doesn't matter if we group with mezers or not, as long as we don't target the mez'd mob, none of our spells break the mez, and that is how SoE designed it. in group dynamics, the conj is a highely sought after DPS, because we can cast our 3 main DoT's and hit for well over 200 damage (400+ at adept 3 each) per second for about 15-30 seconds, that can't be beat lol. Healers love us becasue we can quick stun and petrify and pull aggro right off o fthem with our stuns and aoe's.
The only down fall is sing pollution while using our aoe's, it tends to draw aggro quit a bit.
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As to necro's they are great in most of the same ways, they do have an 'advantage' over conj's in that they can summon plage rats (dogs at adept3) to fight along side of the necro along with their pet, you can consider them as 3 seperate dots casted at the same time, granted, theyare on a timer, and their recast time is not that great, but hey it helps. I'd say it helps alot more for soloists than in groups, but it is useful none the lss.
Necros have the wonderful ability to turn the group dynamic to the offensive when needed because they can chain cast their dd's and dots as fast as they can (which conj's can do.) One thing that i have noticed tho, is that alot of the necro spells are a bit more powerful than conj spells, but have higher recast times, so it is balanced out.
You can basically assume that if a conj is not avaialbe, a necro will do just fine, and if a necro is not avail a conj willd o just fine. Relly not a drastic difference, but enough.
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We as conj's dont get group pets untill lvl 38 :/ not the best move by SoE, but hey at that level they will be great. We are focused on Pets and DoT's, in fact if you think about it, on the AoE scheme of things, we have 6 Dot's and 2 Aoe's but 3 of those DoT's are AoE's.
And with the ho's we rock. Our single blast ho's (single target only) hits for 2x80 or 1x80+110 damage most of the time. And our AE HO hits for 3x40 or 125+40 damage (dependant on level of mob). Consistant hits, rarely resisted.
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The point: Choose what you want, evil or good, both are great assets and very underplayed in EQ2 because most don't understand how to use AEs properly or DoT's properly. Conj's are underused, but when properly used in a group you are sought after all the time.
I'll end this now, but just to say this: Conjurers are DPS. Our primary is Damage over Time. We have 6 of those spells alone. we also have many stuns. Don't cross us lol if we get pushed to the limit WE WILL surive in a group becasue we will be dealing out the damage when the tank dies. Necros on the other hand (sorry guys) i don't like lol