Bloody Bloom

Choose a target within 60ft that you can see, if the target has full health nothing happens, if they are below full health, the target makes a Constitution saving throw, taking 2d6 magical piercing damage. On a Success nothing else happens, on a failure at the start of the targets next turn they roll a hit die, expending it, and taking magical piercing damage equal to the number rolled. At the end of each of the targets turns the target makes another Constitution saving throw to attempt to end the effect, on a success the effects end, on a failure at the start of their next turn they roll the same amount of hit die as the previous turn + 1 additional hit die, expending it and taking that much magical piercing damage.