Sentient Meat Hook

The Sentient Meat Hook is an item in Risk of Rain 2.

When the holder damages an enemy, there is a 20% chance (+20% per stack) that a burst of hooks will shoot out from that enemy, pulling in up to 10 other enemies (+5 per stack) and dealing 100% total damage to each.

Each hook has a proc coefficient of 0.33.

This item stacks hyperbolically in the chance to fire hooks, and linearly in the number of hooked enemies.

Math
The chance to activate is determined by the formula

Tips

 * Similarly to the, this item is useful for gathering up many enemies into one spot to strike them all with area-of-effect items or abilities.
 * Due to the hyperbolic stacking, a single Sentient Meat Hook will activate more frequently when stacked with than additional stacks of Sentient Meat Hook. The only drawback to this is the number of enemies it can hook, but this is rarely an issue.