Hydra Charm (Patreon)

Wondrous item, very rare (requires attunement)

This golden talisman is made of five twisting hydra heads and hung from a simple gold chain. While wearing this talisman, you gain the following benefits:

• When you use your reaction to make an opportunity attack, you can make a second attack against that same target as part of that reaction.
• You can make an opportunity attack, even if you've already used your reaction.
• When you are forced to make a saving throw against being blinded, charmed, deafened, frightened, stunned, or incapacitated, you can use your reaction to make the saving throw with advantage.
• When you take more than 25 damage from a single attack or effect, you can use your reaction to regain 10 hit points. If this damage would reduce you to 0 hit points but not kill you outright, you remain at 1 hit point instead and do not regain 10 hit points.
• When your head would be cut off by an effect, such as by a vorpal sword, you can use your reaction to negate the effect.

Once a benefit of the talisman has been used, that benefit can't be used again until you finish a long rest.

The hooded warlock moved with a strange grace, as if they knew what to expect and how to react to it. Dangling from their neck was a single golden pendant made of twisting, serpentine necks. Spells and wounds seemed to only graze them, and despite the guards' best efforts, no attempts to addle or debilitate them took hold.