Animalistic Necessities

With the curse of becoming a beast such comes...rewards? boons? no... benefits that shall be used sparingly to keep the image of confidence and humanity. Thus when needed most, although unfortunately, you may use them.
Whenever you make a strength, intimidation, or survival check, or you may spend a hit die of your choice to add that amount to the roll, but this choice can be only done before the roll is made.

You may spend a hit dice in this way an amount of times equal to your proficiency bonus per long rest. 

Additionally, when making death saves if you roll a 19-20 you get back to 1 hit point.