Magic Damage Reduction, Arcane Damage Buff For Pets/Minions (Patreon)

The buff "Soul Infusion" 

https://www.wowhead.com/spell=317103/soul-infusion

can be obtained from literally any pool of water in Bastion in the Shadowlands. This buff gives you up to 10% arcane damage increase and 5% magic reduction. *

The buff is not designed to be taken outside of the zone* and vanishes on any port. However, classes which can use minions can get around this:

1. "Dunk" your pet in a pool in Bastion, ie command them to enter the water.

2. The pet will receive ticking stacks of a buff. Dismiss your pet while the buff is ticking.

3. Re-summon them outside of Bastion-the buff will continue ticking till you have received maximum stacks and remain on your pet for its full 30 minute duration.

The arcane damage part of the buff may be useful-but I cannot at this time find a pet/minion which uses arcane damage in its attacks. 

However the magic damage reduction is quite useful for a number of wow situations. Increased pet survivability is really useful in chaotic situations like raids and epic pvp, where magic damage is everywhere and it is difficult to keep track of what your pet is doing. 

The ticking effect from fluid-based buffs is not exclusive to this exploit. If you can find another fluid-based effect like this you may have something useful. 

* The buff itself is very underrated for leveling in Bastion - it makes leveling for classes such as druids, mages and hunters with specs which use arcane damage heavily - faster. This however is not an exploit, just something comparatively few players notice.