Warped Soul

Experiments in premier magical universities probe the deeper nature of reality, but in doing so they create tears in that reality known as portals. These could appear anywhere, and they provide an instant link to another place. Your character discovered one, entered it, and were changed forever. The power of that portal is the source of your character's magic, and it manifests in the ability to create portals of your own, controlling the tears in reality.

Create Portals

At 1st level, you can harness the energy of the portal through which you travelled. As a bonus action, you can cause two portals to appear. You can only create up to two, and they can fit Small objects through. You cannot squeeze through portals. When an object travels through the front of one portal, it appears from the back of the other, and vice versa, and you decide which side is the front or the back. The portals must be 30 feet or less away from you at all times (or else they disappear), and when you create them they must be within your line of sight. You can also use your bonus action to make the portals disappear, or to move one or both.

The uses of portals are open-ended, but some ideas include shooting projectiles through portals, teleporting halflings, giving a range to touch spells, stealing remotely, and anything else permitted by these rules and your DM.

Travel Through Portals

At 6th level, you can change the form of your portals so that you can travel through them. As a bonus action, you can spend one sorcery point to enlarge your portals to Medium size. If something or someone travels through them whilst enlarged, it costs a further sorcery point per person. You can shrink the portals as a reaction after someone travels through them, or as a bonus action.

Fourfold Portal

At 14th level, you learn to call another two portals into being. When you create portals, you can spend 3 sorcery points to create another pair. You can only move a pair of portals at a time, but you can choose to destroy one or two pairs at once.

Planar Warp

At 18th level, your magical portal powers work between planes. As an action, you can spend 5 sorcery points to shift yourself into the same location on a different plane of your choice.