Since I came across this threat back when i started Ars Magica 2 and it helped a lot, I now want to give something back. I especially put some effort into creating spells that deal damage, comparable to other mods stuff, like Tinkers Construct's infamous rapier.
The (imo) best and most
efficient spell against bosses:
Beam|Range|Range|Range|Recall
You can skip some of the range modifiers if you feel brave. What this will (obviously) do, is it will constantly recall the target to a marked position. As soon as the target is where you want it, just keep rmb pressed and this works somewhat like a tractor beam. While it won't deal damage at all, imagine all the nice zones where you can get your enemy stuck.
I'm using this with a
Projectile|Zone|Duration|Duration|Lightning Damage|Damage|Damage to melt enemies in place.
A more... Fancy approach would be
Projectile|Zone|Duration|Duration|AOE|Star Strike, although that's less server friendly.
Just remember to place the zone before summoning the boss, depending on it's healthpool you may need more or less duration modifiers.
If you are not high level enough for a zone spell, this is a nice addition to a group of fighters as well. You hold the target down while the others unleash hell.
Feeling fancy? Don't cast the zone yourself, but put it into a nexus powered caster. Push the button to prepare the grinder and then send in the fresh meat.
Or you could prepare some other sort of trap, e g Portal Gun turrets, those spikes from Extra Utilities or even good old dispensers with arrows.
Kind of a cheap tactic, but it pays off.
Or turn the setup around! Put the recall beam into the caster to keep the enemy in place while you deal the damage. Makes you feel bad for the boss though.
Now if you substitute the beam shape with a chain like this:
Chain|Range|Range|Range|Rune Procs|Rune Procs|Rune Procs|Recall, you can easily gather stuff for a mob grinder. This is also a simple, yet effective secure, should you find yourself surprised/overwhelmed by enemies and cheaper than an actual damage spell.
For a war game:
The Mortar -> Zone|Projectile|Gravity|Speed|AOE|Physical Damage|Dig|Ignite
I created this baby not for griefing purposes, but for a worms like pvp (with the condition that only weapons are allowed which destroy the land)
It is pretty inefficient and you should cast another zone containing Heal, Regen and possibly Life Tap first (I did). Afterwards, you spam the mortar and rain fire onto your enemies, as the earth crumbles underneath them. Nice for attacking enemies beyond line of sight.
Would it be possible to make a death contingency that somehow took care of your items?
EDIT: well you could make a |contigency:death|Zone|durationx3|AoE|telekinesis|
Add "Mark" and if you have a
Self|Recall in your soulbound spellbook, you can pick the stuff up immediately.
And for for finale, a spell to cleanse the worlds surface of any life form, at about one frame per second:
Chain|Rune Procs|Rune Procs|Rune Procs|Range|Range|Range|Zone|Duration|Duration|Duration|Star Strike
I am actually not sure if this did what it was supposed to do (creating zones of falling stars around every chain target), I only know that when I respawned, the land was littered with bones and glittering of XP orbs. There was also no one left who I could have asked. Let's just call it a success. Use at own risk and maybe ask a server admin.