Wellspring of Motivation

Choose up to 5 creatures you can see (including yourself). Those creatures may immediately spend up to 3 of their available (unspent) Hit Dice to instantly regain health as they would during a short rest. Those creatures do not get any other benefits of a short rest.

At Higher Levels: When you cast this spell using a spell slot of 6th level or higher, the the number of Hit Dice a creature can spend and regain increases by 2 for each spell level above 5.