Originally Posted by
Eth
We tested stacking absorption between U21 and U22, back when Fire Peaks had those nasty meteors that dealt huge amounts of fire damage.
Our goal was to get more people to survive that phase, especially the ones without improved evasion.
I also thought all kinds of different values stacked before our test, but that showed not to be the case.
Our test was pretty simple - PvP pit and people hitting with Strike Down from divine crusader, which did a static 500 fire damage.
I think strike down currently does light damage though, so at the moment you would have to look for another way to test - Volcanos Edge for Fire, Lightning Mace for Lightning, Anvil of Thunder for Sonic should all do the trick since they do static 100 damage on non vorpals.
Basically all kind of different things do stack - arcane past lives, spells (fire shield), Destiny stuff (Block energy from Sentinel).
When it comes to equipment though, only 1 absorption item works. And like I said sometimes it was even the item with the lower value, but I couldn't make much sense of when that happens.
However, absorption on weapons did stack with absorption on equipment (so greensteel sticks are still OK in that regard).