Aura effect, buff effect, weapon elemental damage

Do the 3 mechanics:
x% increased effects of Auras you Cast
x% increased Effect of Buffs on You
x% increased Elemental Damage with Weapons
-> all stack together additively?

So for example, if I have:
8% increased effects of Auras you Cast
3% increased Effect of Buffs on You
5% increased Elemental Damage with Weapons
100 average cold damage from an aura I cast
-> would that equal 116 average cold damage in the end?

Edit: sorry, meant to post this in Gameplay Help

No, increased effect of auras and increased effect of buffs on you increase aura effect directly, they are additive with each other but multiplicative with all other bonuses.

In your example, you'd get 111% of aura effect, so it's 111 base cold damage, which is then increases by all your elemental bonuses. In your example it's still 116, the game rounds down, but you'd see the difference with bigger numbers.

Ah awesome, thanks for that!