Use this macro
/use Mighty Rejuvenation Potion
/use Mighty Rejuvenation Potion
/use Mighty Rejuvenation Potion
/use Mighty Rejuvenation Potion
/use Mighty Rejuvenation Potion
/use Mighty Rejuvenation Potion
Spam it and it uses a absurd amount of Mighty Rejuvenation Potion - Item - World of Warcraft so you will heal back up to full mana and hp
Also works with any other time of potions if you spam it just adapt the macro to it
NOTE: you need the potions in your bag this macro just simply lets you spam it and use alot at once
NOTE: have only tested on cata servers doubt it works on WoTLK servers,