Arcane Gate

6th level Conjuration
Casting Time
1 Action
Range
500 Feet
Duration
Concentration, up to 10 minutes
Components
V
S
Class
Sorcerer
Warlock
Wizard

Spell Description

You create linked teleportation portals that remain open for the duration. Choose two points on the ground that you can see, one point within 10 feet of you and one point within 500 feet of you. A circular portal, 10 feet in diameter, opens over each point. If the portal would open in the space occupied by a creature, the spell fails, and the casting is lost.

The portals are two-dimensional glowing rings filled with mist, hovering inches from the ground and perpendicular to it at the points you choose. A ring is visible only from one side (your choice), which is the side that functions as a portal.
 
Any creature or object entering the portal exits from the other portal as if the two were adjacent to each other; passing through a portal from the nonportal side has no effect. The mist that fills each portal is opaque and blocks vision through it. On your turn, you can rotate the rings as a bonus action so that the active side faces in a different direction.

Is Arcane Gate Good?

Overall Rating: Orange. This means that arcane gate is an OK spell.

Overall Notes: Allows you to open a portal between two locations that you can see. Fairly similar effect to dimension door except as many creatures as you like can move through the portal in a 10 minute time span. Useful for getting more than one companion out of dodge, but it's quite a high spell slot for the effect.