Consuming Draconic Essence

After fighting elves for a bit the party decided to return to the castle, and go for round two against the dragon. They slew it! The sorcerer decided to bite into the dragon's heart, and received a vision of the missing princess speaking with the dragon. But the sorcerer was not satisified with just a bite. He ate the whole thing.

You gotta reward that kind of behavior, so for the next session I prepared some consequences.

YOU WILL BELIEVE. (No, I have not seen this movie) 

 Consuming Draconic Essence

You can consume the essence of a dragon by devouring its heart, or by another appropriate method. Each dragon only has one essence.

The first time you consume the essence of a dragon, roll 1d4 on the Benefits table and 1d4 on the Penalties table. For every subsequent essence consumed, the size of the die you roll on the Benefits table increases by one step, to a maximum of 1d10. You always roll 1d4 on the Penalties table.

Reroll duplicate results on the Benefits table, but not on the Penalties table. 

Benefits

1. At the end of each session, you gain 5 extra XP for every 50 gp worth of treasure you own. These XP are only for you and not shared with anyone else.

2. You grow scales and gain natural armor that gives an AC equal to 13 + your Con modifier.

3. You learn Draconic, and can cast charm person once per day without using a spell slot. If you don’t have a spellcasting ability score, use Charisma.

4. Whenever you deal damage of the same type as the most common breath weapon among the draconic essences you have consumed, you deal 1 extra damage per draconic essence you have consumed.

5. You gain a breath weapon that you can use once per day. It affects a 30’ cone. It deals 1d6 damage per draconic essence you have consumed. The damage type is that of the most common breath weapon among the draconic essences you have consumed. A target can make a Dex save to take half damage. The DC is 8 + your proficiency bonus + your Con modifier.

6. You gain resistance to the damage type of the most common breath weapon among the draconic essences you have consumed.

7. You gain +2 Constitution, and your maximum possible Constitution increases by 2.

8. You gain +2 Charisma, and your maximum possible Charisma increases by 2.

9. You become one size category larger. Your weapon/unarmed attacks deal 2 extra damage.

10. You grow wings and gain a flying speed of 60’.

Penalties

1. Half of all treasure you own, and half of any you earn (rounding up) are considered your hoard. To spend treasure from your hoard, you must pass a Wis save of DC 12 + the number of digits in the gp value you want to spend. If you fail, you can try again the next day. The DC increases by 2 for every additional time you roll this penalty.

2. If any of your treasure is stolen or lost, you take 1d4 psychic damage per digit in the gp value lost. The size of the dice increases by one step for every additional time you roll this penalty.

3. Your ungainly body reduces your Dexterity by 1, and your maximum possible Dexterity is reduced by 1.

4. The stress of your transformation causes you to gain one level of exhaustion and lose 50 XP.