Boon of rebirth

Epic Boon Feat (Prerequisite: gifted by a phoenix, must be level 10+ and have a con of 15+)

You gain the following benefits.

Ability Score Increase. Increase one ability score of your choice by 1, to a maximum of 25.

Rebirth. Once per long rest, if you are reduced to 0 hit points, you can regain 50 hit points and rise from unconsciousness at the start of your next turn, enveloped in fiery rejuvenation. This ability mirrors the phoenix’s cycle of rebirth and can save you in dire circumstances.