Toxic

Inflicts a crippling poison upon a creature. Target creature in range must make a CON saving throw, or receive the poisoned condition, and receive on stack of the 'Toxic' effect. 'Toxic' is a poison effect that deals increasing damage each round. At the end of each round, a creature with 'Toxic' takes 1d6 necrotic damage per stack of 'Toxic', then doubles their number of 'Toxic' stacks. A creature with the 'Toxic' effect can only receive more 'Toxic' stacks by the round-end doubling, and all stacks will have all stacks removed upon being cured of poison.