Realm Walker

The ‘Realm Between’ is a lost dimension that mirror other planes. The reality itself collides and crash with each other rendering the dimension unhabitable. The Realmwalkers hone their knowledge and awareness of the dimension with teleportation magic to gain advantage on the battlefield.

Displacement

Starting at 3rd level, you can harness energy from the Realm Between to tether your power to a target.

As bonus action, you can mark a creature or loose object no larger than 5 foot cube within 5 feet of you. The mark last indefinitely until removed using an action, or until you dismiss it(no action).You can only have one active mark at a time.

While a marked target is available, you can do one of the following as bonus action:
- You can magically teleport to an unoccupied space of your choice within 5 feet of the target. Alternatively, you can teleport the target towards you instead.
- You can swap location with your target.

Realmwalking

At 7th level, you can magically enter Realm Between unharmed. After 1 minute of casting, you briefly tear open a rift that immediately pulls your body inside and then closes behind you. You enter the realm as if you are in the etherealness spell but treats Realm Between as the ethereal plane. You can sustain the magic for up to 10 minutes or until you dismiss it. You can invoke this magic once and regain use of it after short or long rest

Swift Swap

At 10th level, When targeted by an effect that forces you to make saving throw, you can immediately swap your location with a target as reaction. Doing so also swaps you as the triggering effect’s target, leaving you unharmed. If an effect such as fireball still reaches you after the swap, you roll the save as normal. Once you use this feature, you can't use it again until you finish a short or long rest.

Solid Mark

At 15th level, you can create one or two marker at once. You now can use Displacement to swap your targets with each other, and you also ignore size restriction when marking a target. Additionally when using action surge feature, you can use Displacement as the same part of the action. You can use the Displacement before or after the additional action.

Reality Shift

At 18th level, you have mastered control of realmwalking. As an action, you can force marked creatures to enter Realm Between with you. It must make a Charisma save(DC 8+ Proficiency bonus + CON). Fail or success, their mark disappear after the attempt. On a fail, you and the target remain in the Realm between for 1 minute or until you end it early, or you lose concentration, in which both of you immidiately reappear in the previous space. The targets’ speed is halved and takes 10 force damage at every start of it’s turn, as the realm between ravage them. Once you successfully shift a creature, you can’t use this feature again until you finish a long rest.