This script provides additional "synchronization effects", or simply "sync effects", for Synchronized Battlers. The default sync effect is when the parent dies, its children also die, which is called "sync death" effect.
Some sync effects that are available include
Setting the exp rate for enemies that died due to "sync death"
Setting the gold rate for enemies that died due to "sync death"
Sync'ing HP between two linked battlers so that damaging one will also damage the other
Sync'ing MP and TP between two linked battlers so that any consumption by one battler will also consume the MP/TP from the other
New sync effects can be added easily, such as synchronizing states or features.
Using sync effects can greatly customize your synchronized battlers.