Synchro

Synchro (シンクロ) is a technique that appears in Kingdom Hearts: Chain of Memories. It allows the user to set nearby enemies' HP to that of the target.

Mechanics
In Kingdom Hearts: Chain of Memories, Synchro is a magic sleight. Its card combination is:

Kingdom Hearts: Chain of Memories

 * Sora learns Synchro after finding Rabbit.

Kingdom Hearts Re:Chain of Memories

 * Sora can obtain Synchro from the first Wonderland Room of Rewards.