WoW Classic, One Minute Invincibility For Warriors And Interesting Exploits (Patreon)

The trinket  "Diamond Flask" https://classic.wowhead.com/item=20130/diamond-flask#comments , an award from the warrior class quest "Voodoo Feathers"  https://classic.wowhead.com/item=20130/diamond-flask#reward-from-q , can be exploited to make the warrior invincible for one minute.

The trinket's on-use ability scales with any healing gear the warrior may have. So a warrior can equip as much gear as possible with +healing stats and regenerate their health to maximum almost instantly. They can then switch their gear to a regular set while the trinket is one cooldown. The trinket's effect lasts one minute and goes on cooldown for six minutes. 

In other classic exploits new, someone has posted an ingenious method for stacking multiple darkmoon faire buffs from the npc Sayge :

https://us.forums.blizzard.com/en/wow/t/currently-able-to-stack-multiple-dmf-sayge-buffs/440543.

Finally there have been continuous reports of the soft reset malfunctioning in the Scarlet Monastery. Numerous players have reported the trash resetting with 3-5 minutes. This makes for very effective grinding since you never run out of trash. The exact trigger is not known though many [players reported this happening after a wipe.