|• Crystal generation|
• Magic resistance +20%
• Counts as dragon
"Made entirely from red crystal and brought to life through magical means, the Crystal Dragon is literally semitransparent, lit from the center by its magical heart. Used frequently as a training tool for young dragon slayers, many wizards also create these creatures for the crystal they shed." AB manual
Tactics and info
They are also the second strongest creature in the game in raw stats, the first being the Azure Dragon. Crystal Dragons can also be resurrected, probably due to their magical heart, even though they are considered to be golems.
Crystal generation special ability
Crystal Dragons have vaguely phrased special ability called crystal generation. It produces three crystals (3x ) at the beginning of each week if the player has at least one crystal dragon in any of his armies. The effect is not cumulative, which means that several crystal dragon stacks in a hero's army or several crystal dragon stacks in different heroes' armies does not produce more than the three crystals.
Crystal Dragons were added in Armageddon's Blade so there are no Crystal Dragons or Crystal Caverns in Restoration of Erathia. They also appear at the end of the Crystal Dragons scenario from the Dragon Slayer campaign in Armageddon's Blade.
Even though in the game files themselves the Crystal Dragon and other neutral dragons are considered to be level 7, the official editor shows they are level 10 (8 for Faerie Dragon). This is either due to code limitations and impossibility of creating a unit with tier higher than 7, either because the developers didn't have time, motivation or reason to add a new creature level in the game code and invest time in that, just telling us they are level 10, respectively 8. As such, even now their levels are still being debated.