Breath of the Green

Close-quarters spell
Daily
Target: 
1d4 nearby enemies in a group; breath weapon
Attack: 
Charisma + Level vs. PD
Hit: 
15 + Charisma ongoing poison damage.
Miss: 
5 ongoing poison damage.
5th Level Spell: 
25 + Charisma ongoing poison damage; 10 ongoing on a miss.
7th Level Spell: 
35 + Charisma ongoing poison damage; 15 ongoing on a miss.
9th Level Spell: 
50 + Charisma ongoing poison damage; 25 ongoing on a miss.
Breath Weapon: 

For the rest of the battle, roll a d20 at the start of each of your turns; on a 16+, you can use breath of the green that turn if you wish.