Potion of Poison

Illusion magic make this concoction look, smell,
and taste like a potion of Healing. If you drink it,
you take 3d6 poison damage, and you must
succeed on a DC 13 Constitution saving throw or
be Poisoned. At the start of each of your turns
while you are Poisoned in this way, you take 3d6
poison damage. At the end of each of your turns,
you can repeat the saving throw. On a successful
save, the poison damage you take on your
subsequent turns decreases by 1d6. The poison
ends when the damage decrea