Crystal

Crystal Builder Guide Waves 1-9

Crystal can be a bit tricky but if you start with at least a crystal and mana you can hold for the majority of the game with just that. It has its obvious weak rounds, but is extremely strong on most other waves. Like Necromancer it is expensive but is also great for ECO. 

Waves 1-9

Wave 1. Build a Star                                                                                       

Wave 2. Keep build                                                                                       

Wave 3. Build a Star                                                                                      

Wave 4. Keep build                                                                                       

Wave 5. Keep build                                                                                        

Wave 6. Build Golem                                                                                    

Wave 7. Keep build                                                                                        

Wave 8. Build Tower                                                                                     

Wave 9. Keep build