Echo Timewinder

"The only way to go back is to go forward" - E

The Echo Timewinder is a legendary temporal distortion device sought after by House Cannith. This is a cylindrical canister that hangs down to hip level with a strap. It catalyzes and focuses the attuned user's psychic energy to harness an array of powers. The unit cost of each power is the equivalent to expending a Psychic Energy Die, a Psionic Energy Slot, or a Spell Slot depending on the attuned user's class.

Ageless

The attuned user does not age while wearing the Echo Timewinder device.

Immunity to Time-based Effects

The attuned user is immune to time based effects such as Slow, Haste, and Aging.

Time Distortion Grenade (Cost 1) 

The user uses an action to manifest a ghostly blue disc that may be propelled upto 60ft. Any creatures within 20ft of its path may choose to spend a reaction and 10ft of movement to make a Wisdom or Dexterity Saving Throw to get out of the area of effect. Those affected suffer the effects of a Slow spell. From outside of the area of effect, everything within the path of the time grenade appears to be moving in slow motion. 

Convergence (Cost 3)

The user may use an action to shift the plane of existence of a target area upto 40ft away. The target area is a 20ft radius globe that aligns this reality with a parallel one for a few seconds enough to force every other creature in the area to make a Wisdom Saving Throw or be stunned until the start of the next round. The user themselves gain +1d6 temporary hitpoints for every unspent Hit Die they currently have. NOTE: If Convergence is used again before any of the previous temporary hitpoints were depleted, then it is replaced with the new value. Temporary hitpoints do not stack.

Phase Dive (Cost 2)

The user may use a bonus action to blink through time, effectively acting as a Misty Step, to offensively deliver a Sneak Attack. Attuned users who naturally employ Sneak Attack may add an additional 1d6 damage.

Chronobreaker (Cost 5)

During this round, the attuned user is immune to space displacement effects such as being teleported, gated, telekinetically moved, or physically shoved. Onlookers will see a number of time paradox afterimages replicating the user's actions since the beginning of last round. On initiative 20 of the next round, all the paradox afterimages catch up to the attuned user and release a temporal shockwave that deals 5d6 temporal damage to everyone else within 30ft. The attuned user may opt to spend additional psychic energy slots to increase that damage by 1d6 for each slot used.

Notes: sentient creature with psychic/psionic energy or spell slots