Arcane Healing

As a bonus action roll 2d6 plus your spell level you just casted and heal that many hit points. As you reach certain levels the dice you roll will go up.

Level 10: 2d8
Level 15: 2d10
Level 20: 3d12

Example
Cast level 2 spell 
3+2d6=hit points healed

Upper Level Example
Cast a level 7 spell
7+2d8=hit points healed