Blessing of Ilmater’s Call to Arms

For being in service to the God Ilmater. You gain the following blessing:

•  Once per short rest, as a Bonus Action, you may inspire one of your allies within 10’ immediately after they take damage to immediately spend hit dice as if they were taking a short rest.  
•  the number of hit dice that may be spent EQUALs the feat holders Proficiency Bonus.