Bernie's Defensive Blast

A white, clear, sphere surrounding you full of White Energy erupts. all targets you choose in the sphere take 5d8 Force damage and are pushed 2d6 x 10 feet away from you plus must succeed on a Dexterity saving throw or be knocked Prone. The turn after you cast this spell, you have +2 AC on that turn.

For every 1 level higher spell slot you cast this at, the knockback increases by 1d6 (example: 5th level= 4d6 x 10 feet) and the damage increases by 1d8.