School
Level
Source
Class

Arcane Vigor

Level
Level 2
School
Abjuration
Casting Time
1 bonus action
Range
Self
Components
V, S
Duration
Instantaneous
Ritual
No
Source
XPHB

You tap into your life force to heal yourself. Roll one or two of your unexpended Hit Point Dice, and regain a number of Hit Points equal to the roll's total plus your spellcasting ability modifier. Those dice are then expended.

Using a Higher-Level Spell Slot

The number of unexpended Hit Dice you can roll increases by one for each spell slot level above 2.