Hover over the icons under "Damage" to see list of attacks.
Dragon Lvl Weakness HP Damage 
Star Dragon 18 
6,720 
2,772- Flying Kick: 2,123
- Earthquake: 2,626
- Laser Beam: 2,772
- Meteor Shower: 2,772
Laser Dragon 18
6,720 2,772- Flying Kick: 2,123
- Lava Balls: 2,626
- Laser Beam: 2,772
- Flaming Arrows: 2,772
Gold Dragon 18
7,462 2,974- Hard Charge: 2,380
- Nail Rain: 2,828
- Electric Shock: 3,559
- Magneto: 2,974
Reward: 2 
and 15500 
Strategy: Against Star Dragon use Ice or Metal attacks from an Armadillo Dragon or a Soccer dragon. Against Gold Dragon use Electric attacks from a Neon Dragon or a Laser Beam from Dragon/Hot Metal Dragon. Against Laser Dragon use Sea attacks from a Waterfall Dragon or a Mud Dragon or if you prefer use Electric attacks from a Chameleon Dragon or a Star Dragon.