Minecraft Dungeons:Chains

"Has a 30% chance to chain a cluster of mobs together and keep them bound for a short time [sic]"

- In-game description

Chains is an enchantment in Minecraft Dungeons. It grants a chance to bind mobs together with the intent of easier attacking. The duration the mobs are chained together increases with each tier.

Tiers
de:Minecraft Dungeons:Ketten ru:Minecraft Dungeons:Цепи zh:Minecraft Dungeons:链锁