Does Sven's ult stack with double damage?

Does Sven's ult stack with double damage? If it does, does the order of activating ult and double damage make any difference?

dota-2

Best Answer

Sven's ultimate gives you 100%/150%/200% bonus damage.

Only increases base damage and that given by the primary attribute of Sven. Raw bonus damage is not increased.
– Sven - Dota 2 Wiki

Your damage consists of 2 numbers: A +B, and this description basically means that the ultimate gives you 100%/150%/200% of the A number. It excludes raw damage items (but items that give Strength still count)

Exactly the same can be said about the Double Damage rune: it gives you 100% of A.

Since both of these only increase B and are based only on A, their bonuses will not be multiplied with each other; they're completely independent. But they do stack in a sense. The order of activating them does not make a difference, and it probably wouldn't make a difference even if they stacked in some complicated way.

So if you have both Double Damage and Sven's ultimate level 3 active, your total damage will be:
A+B + A*2 + A (the 2 stands for 200%).