Fire Giant's Prowess

Once per long rest, as an action you may harness your ancestry to take on a form akin to an avatar, gaining the following benefits:

- Player character, no matter their original height, grows to 10'6"

- Melee attack reach is now 10 ft 

- Any hostile creatures that start, end, or enter a 5 ft radius on their turn takes 2d4 fire damage

- You gain an extra attack per turn, added onto any you may already have.

- As a bonus action, you can attempt to frighten a hostile creature you can see with a DC of 1d20 + your CHA bonus. A creature frightened by this can roll at the end of each of their turns to end this effect, otherwise is effected for 1 minute. A creature who succeeds on the roll is then immune to this effect until you take a long rest. The defending creature rolls a WIS saving throw.

This form can only be sustained without issue for 10 minutes. 

If you wish to sustain this form for longer, at the end of each of your turns, you must roll a CON save with a DC equal to your character's level. 

If the CON check is failed, you revert back and are incapacitated until your next turn.

When you choose to sustain the form longer than 10 minutes, once you revert back you gain 1 level of exhaustion per turn after, potentially killing your character.