xp scroll on double exp days

[kanusti]

doit stack or is it wast of scrolls

[Moriganna]

We have double exp days? I never noticed.

[gruntar]

They stack in so far as vip stacks with xp scrolls, i.e. 100% xp scroll+100% vip(for example)+double xp 100% = 300% bonus xp, or 4x normal xp earned

It basically just adds a 100% scroll to all your dungeon xp that stacks with everything else