rabbit's foot

I would like to see the ability to 'off-hand' the rabbits foot. It could have a durability of 15. It should have a small chance to proc on certain events.

Any time that fortune would proc(2% chance to give fortune 1-3)

Anytime a fish would be caught(2% chance to skew the loot table 1 tier upwards in rarity)

When digging dirt, gravel, or sand(1% chance to find a gold nugget)

When collecting xp orbs(1% chance to double the xp received)

When taking fatal damage(2% chance to survive with half a heart)

The chance to proc should be low, around 5%, and the foot's durability should decrease by 1 each time it procs, even if the effect fails.