Earth Rune

Cast on a surface within range that you can see. A rune imbued with magic appears on the location you point at. When an enemy enters the area of the rune it explodes for 1d6 bludgeoning damage, damaging enemies within 5 feet of the rune. Only one of each different type of rune may be placed by you at one time. All runes created by you must be placed within 30 feet of each other. The rune is dispelled when the caster is more than 120 feet away.

This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).