Potent Grung Poison

Your poisonous skin has become more deadly, granting you the following benefits:

• When you make a damage roll that deals poison damage, it ignores resistance to poison.
• When you make a damage roll that deals poison damage to an entity that is immune, the poison deals resistance damage instead. 
• Your poison becomes more potent as you gain experience. Add your proficiency bonus to the DC of your poison effects.