Casting Time: 1 action
Range: 500 feet
Components: V, S
Duration: Concentration, up to 10 minutes
You can create any linked teleportation portals which shall remain open for a specific duration. You can also select two points on a specific ground which you could see, even one point within 10 feet of you and a point within 500 feet of you. Even a circular portal, 10 feet in the diameter, opens over each point. Suppose, if a portal would be open within a space occupied by the creature, the spell shall fail and also the casting is lost.
Even the portals were two-dimensional glowing rings which are filled with the mist, hovering inches from a ground and perpendicular to it at the points you select. A ring is visible but only from one side (depends upon your choice), which is the side that the functions as a portal.
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Any kind of creature or else an object which are entering the portal exists from an other portal as if those two were adjacent to each other; but passing via a portal from a nonportal side which has no effect.
The mist which shall fill each of a portal that is opaque and blocks vision through it. Upon your turn, you can rotate some of the rings as a bonus action so which the active side faces in a different direction.