Cascading Blast

A beam of destructive arcane energy hurtles towards a target within 80 ft. On a hit you deal 2d4 Force damage to every creature within a 12 ft radius, each creature must make a Dexterity saving throw to avoid the blast. On failing they take full damage and create a secondary blast on the next turn that is 2ft smaller centered on them (cannot make more than one blast, preventing infinite loops between two or more creatures but still take damage from it). On succeeding a saving throw they take half damage and does not cause a secondary explosion.

The spell creates more than one beam when you reach higher levels: two beams at 5th level, three beams at 7th level, and four beams at 9th level. You can direct the beams different targets but not the same one.  Make a separate attack roll for each beam.

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 3rd. The damage increases by 1d4 for each slot level above 3rd.