Wither Farm

[upper jungle]

I'm also using Progressive Bosses, so withers have 1080 HP and a lot of healing

[vagrant bluff]

Create one or more X-Reactors and berry farm turrets. That'll generate all the source you'll ever need (storing the excess source will be harder, lol).

The only way to make it less destructive for the server will be to place it at bedrock level, so the withers don't keep hurting the environment. Alternatively, build it on the nether roof.

Considering that withers are immune to potion effects, gatling-type spells probably won't be very effective, unless the "heal damages undead" effect bypasses I-frames (I never tested).

[upper jungle]

I have a mod that can pick up infinity crystals (a source jar that auto refills 1% per second) so source gen isnt too much of an issue, its just utilizing the rate effectively

[upper jungle]

i was thinking under the return portal in the end

[upper jungle]

the spell is where im having an issue, i dont think the i-frame bypass does anything except make combat dummies give high numbers but then again i couldve set it up wrong in my test world