O-Negative

root@maliwan-db:~$ cat description.txt

A Maliwan transfusion grenade that trades strong damage for a delayed burst of healing. It drains health from enemies and sends that life back as healing, making it a strong support tool before or during a dangerous push, though the healing trails are still inconsistent enough that it works best as supplemental sustain rather than your only source of recovery.

root@maliwan-db:~$ cat notes.txt

Its minimum fuse time can roll as low as 0.1 seconds. The name references the O-negative blood type, widely known as a universal donor.