This ring cannot be removed from a players inventory.
Before an initiative roll flip a coin, if heads gain advantage on initiative if tail gain disadvantage.
You may activate the ring at any point other than during an effect of the ring and has a cool down of 5 mins. When you do, roll a D4 and use this list:
1. Until your next turn stop all current magic (including enchantments) is deactivated and no magic can be cast within 100ft of you. At the start of your turn all effect based magics (enchantments and potions) return to the users but concentration magic does not. Out side of combat this lasts 30 secs
2. Flip a coin. If heads, all allied creatures take half damage until the end of your next turn. If tails, all hostile creatures gain this effect. Outside of combat this lasts 30 secs
3. Flip a coin. If heads, all creatures within 50 ft of you (including you) take 10 damage regardless of damage reductions or AC. If tails, all creatures within 50ft of you (including you) heal 10 Hp. Any healing that goes above max Hp turns in to bonus Hp lasting until the end of a long rest.
4. The DM chooses a number between one and ten. You must pick if its odd or even. If you guess right all allied creatures gain advantage on their next roll. If you guess wrong all allied creatures gain disadvantage on the next roll.
Notes: Lvl 5+
I appologise for the terrible joke. I just didnt want to call it the ring of yin and yang and i saw ring and yin sound similar. so yeah sorry.