Stacking question

[Flintsen]

Does Mantle of the worldshaper stack with Guild xp boost? Major learning pot?

Does Guild augment power shard stack with Wiz 6?

Does Guild augment Attack bonus stack with Spectral Gloves?

[Mrmorphling]

Mantle does stack with both guild xp boost (ship shrine) and potions.

Guild augment power shard does stack with wiz6/archmagi etc.

I haven't personally tested the guild augment atk plus spectral gloves but i'm inclined to say it does stack as guild slots stack with pretty much anything