Glass Cannon

You have been training to be strong for a significant purpose but in doing so you put strain on your own body. you can destroy things with ease but people can also break you with ease, so i must ask you, "was it worth it?" you seem to think so, but how long can you keep this up before it kills you? that is your story to tell.

when you take this feat you gain the following benefits

You get to add a extra d8 of damage to your attack roll for each level you've had this feat for. (including the level you take it)

Once you have had this feat for 3 levels you get to choose which type of damage you want it to be. you can only change this once every long rest. (before it was just Piercing, Slashing or Bludgeoning depending on the weapon you wielded.)

Taking this feat also gives you the following penalties

for every level you've had this feat for, when you get hit by an attack you take an additional 1d8 of force damage.

force damage resistance/immunity does not stop any damage from this feat