Become one with death, and allow your Growth to decay, enhancing your thorns
Level 3
Cycle of Death.
When you hit with Thorn Whip, you may decay all of your Seed Dice any number of times. If you do, increase the Primary Die value of the Thorn Whip attack by the amount of times you decayed your Seed Dice. If a Seed Die would fall below a value of 1, it is expended.
In order to decay, you must have at least one Seed Die. To decay a Seed Die, decrease its value by 1. Example: If you have Seed Dice at 1, 3, and 4, and then decay them, your Seed Dice are now 2 and 3.
Putrefaction Burst.
Action (1/round) (Reach 4): Decay all of your Seed Die by 1. Deal damage equal to your combined Seed Dice value to a target (ignore armor). If at least 10 damage was dealt this way, the target is Poisoned until their next turn ends.
Level 7
Corpseroot.
(1/round) While Dying, you can use Thorn Whip for free.
Level 11
Acidic Thorns.
Your Thorn Whip gains Vicious and "On Crit: Poison until the their next turn ends."
Level 15
Master of Decay.
If you would gain a Wound, you may instead expend a Seed Die that is at its maximum value.