by Gazpy » Tue Aug 04, 2015 12:38 pm
actually you can stack effects from Greater arcane potion and Flask of Supreme power, there are even vanilla videos stating this as a stackable consumables, and yes Giants is 25 str whilst Mongoose is 25 agi 2%Crit, but Elixir of Brute force is not stacking with Giants and the stamina part is not stacking with Fortitude, making the pot good only for farming outdoors.
TL;DR you can have 1 drink 1 flask 1 well fed buff at the time + various of potions, Everyflask stacks with anything that gives something alike it, aka Flask of Titans(1200hp) + Elixir of fortitude(120hp) stacks and should, not sure how does the SP flask works now with arcane pots, but it should stack.
Effects that give you the same effect like Elixir of greater agility Scroll of agility and Elixir of mongoose will work like you would have only the elixir of mongoose on yourself as it gives the most of the stat, Int pots dont stack with Arcane intelect, stamina potions with fortitude, Strenght juju with scrolls and Giants elixir, Etc.
Oh my good dog!