Iwirhim Haunter

Other Spirits you control get +1/+1.
Other Spirit tokens you control get +1/+1.
Flying, deathtouch, beckon {1}{w/b} ({1}{w/b}: Create a
1/1 black and white Spirit creature token with
flying. Activate this ability only once each turn.)
"I saw it! It's the end!"
- Nora, doomsayer