Teleportation Interception

As a skilled user of movement-based magic, you've begun to notice the weave of energy that comes from teleportation. As such, you gain the following benefits:

• You can see ripples of energy within 30 feet when someone begins to teleport, has teleported, and 30 seconds after they have teleported.
• If someone within 30 feet casts a localized teleportation spell (IE moving a certain amount of feet away, not plane shifting), as a reaction you can teleport to an unoccupied square within 5 feet and attempt an Attack of Opportunity.
• If someone within 30 feet has used a localized teleportation spell within 30 seconds (5 combat rounds), then as a reaction you can follow their teleportation and arrive in an unoccupied square within 5 feet of where they landed.
• Both of the above reactions share a pool of uses equal to your proficiency modifier per Long Rest.