The following are known Action Replay Codes for Dragon Dance on Nintendo Game Boy / Color (GB / GBC). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

All Levels Beaten
019909c8

Infinite Time!
01321CC8

Always Full Size Dragon
91051AC8

Always Have Rain Powerup Available
911021C8

Have Windmill Powerup
911521C8

Always Have Leaf
912021C8