Boon Shen - Absolute Reference Frame

You become the fixed center of local reality.

Effects that would forcibly move you fail unless you choose to allow them, and illusions or spatial distortions cannot alter distances or positioning as you perceive them. Teleportation into or out of a space within 30 feet of you fails unless you permit it; when you deny a teleportation in this way, you may instead cause the creature to appear in an unoccupied space of your choice within 100 feet of you.

Space stabilizes around you like a cosmic axis. On your turn, you may sacrifice any amount of your movement until the start of your next turn; allied creatures of your choice within 30 feet gain additional movement equal to the speed you sacrificed, which they can use before the end of their next turn. A creature using this granted movement can move through the air as if it had a flying speed for that movement only and falls harmlessly at the end of the movement if unsupported.

Others around you are always in relative time. When a creature enters a space within 30 feet of you for the first time on a turn or starts its turn there, you may force it to make a Wisdom saving throw against your Martial Arts save DC. On a failed save, the creature is affected as though by the slow spell until the start of its next turn (no concentration required). A creature that succeeds on the save is immune to this effect until the start of its next turn.