#DecemberDiceDiary2023 Day 21!
What's your favorite magical item you've encountered or created?
That'd be a sword serving two masters, the goddess of life and the god of death. The wielder had to roll a d6 and for uneven the god of death would take over, dealing extra damage against servants of life and attempting to avoid hitting servants of death and vice versa.
I always described what happened differently, like the sword becoming a stick, etc.
Player was very confused :D