Dredge (Golgari Swarm)

"Man's best fungus has never disappointed."

Since being in the Swarm, your fascination with the resilience of fungi has definitely been worth the work.

Once per long rest, when you drop to 0 hitpoints or below, instead of falling unconscious or dying, you gain 5 temporary hitpoints for each unconscious or dead creature that you can see. When combat is over or after 1 minute, these temporary hitpoints disappear and you return to either unconscious or dead.

If you reduced another creature to 0 hitpoints or below while having these temporary hitpoints, you instead stabilize at 1 hp when the temporary hitpoints disappear.