Destructive Vortex V2

A swirling portal full of destructive energy, centered on a point within range. The portal is 30 feet in diameter and 5 feet wide, and it is oriented in a direction you chose. Each side projects a magical cone of 100 feet, drawing anything within that area towards it. Both areas are difficut terrain, and all area within 30 feet of the center reduces the speeds of any creatures within it to 0. Whenever a creature enters either cone, ends its turn there, or is there when the spell begins must make a Strength saving throw. On a failure, it is pulled 30 feet towards the center of the portal. If a creature enters the portal, roll a d20. On a 1-7, the creature takes 7d10 force damage and remains in the portal's infinite extradimensional space. On an 8-10, the creature remains in the extradimensional space and is paralyzed for the spells duration. And on an 11-20, the creature is instantly teleported to a random location on the same or another plane of existence. A creature in the extradimensional space can try to escape by making a Strength check against your spell save DC. On 3 successes, it exits the portal on either side, is unaffected by the 30-foot immobilization radius until it leaves and enters again, and automatically succeeds on its next saving throw against this spell. When the spell ends, any creatures within the extradimensional space are teleported to a random location in a structure, on the ground or in the sea within 5 miles of the portal.

(second version, expanded available classes are lowered cost of material component.)