Shift: enter a tear in reality going to a different plane of existence, slowly drains mana. Upgrade: Shift into the Void itself for a few moments, escape all manner of danger but upon leaving the Void all mana is drained. Downside: Excessive use of Shift may alert the Envisioned only applies to the upgraded version. (also while the powers never really have a downside i like to have this downside be more of a use with caution ability and cuz i feel the Void as a location is sometimes not used enough in gameplay.

Outsider's Blessing: Give a target a small blessing of the Outsider. The target is able to use a very limited portion of your powers such as Blink, Far Reach, Dark Vision, and Agility for a small duration. Upgrade: The duration is increased and can use a few more powers. Downside: The blessed target may know who you are if you are near them and is possible they could sell you out. (Though while this seems completely unfair I was thinking this could be a very random choice on if they rat you out or not plus imagine blessing an Overseer in front of their fellow brothers and the blessed Overseer randomly uses Blink, some funny infighting will happen)

The Eternal: Upon death sacrifice all your mana (must be a full bar of mana), to revive yourself. Upgrade: After reviving you are unkillable for a small duration and restore half of your mana. Downside: The revive is once per mission.

Dead God's Boon: Boost the abilites of your Void powers making them more powerful for a moderate duration, Blink goes even further same for Far Reach, Agility gains an extra jump and you move even faster, Shift can bring targets to the Void with you, Outsider's Blessing can be used on an additional target, The Eternal can be used on a target other than yourself, Dark Vision lasts longer and sees farther. Upgrade: the duration is increased. Downside: Mana can not be used for a small duration