An ancient Cryptid said to have been around for millenia. She feeds on humans alone, and leaves animals alone. When she finds a suitable host for a Reaper's Seed, she infects the victim with it by biting them.
The Reaper's Seed is parasitic and will turn the host into a fruit-baring tree within a year, no matter what precautions they take. What is inside the fruit? May Queen seems to have an idea.