Koink's D&D 2024

Source: Player's Handbook

Prerequisite: Fighting Style Feature

When a creature you can see attacks a target other than you that is within 15 feet of you, you can take a Reaction to move up to 10 feet towards them (without provoking opportunity attacks) to interpose your Shield if you're holding one. You impose Disadvantage on the triggering attack roll and all other attack rolls against the target until the start of your next turn if you remain within 5 feet of the target.