Board Thread:Dragon City Wiki/@comment-10090661-20131203004400/@comment-25030726-20141009222312

@LEIN0214 Once you've trained an attack, the attack that was replaced is gone. You can train another attack to take the place of a trained attack, which will make the replaced trained attack trainable again. Ummm, yea. Let me try to give an example so all of that makes sense. We'll use an Elements dragon for our example.

Level 15 Elements dragon has these attacks: Hard Charge, Earthquake, Flaming Arrows, and Tsunami.

It has these attacks available to train: Karate Brick Break, Asteroid, Magma Storm, and Whirlpool.

Now, if you train Whirlpool to replace Tsumani, then:

1. Tsunami is forever gone. You cannot get it back.

2. You can train Asteroid in place of Whirlpool, which will make Whirlpool trainable again. This is useful if you want to change the order of the attacks as displayed in combat. Otherwise, it doesn't have any really useful purpose.

I'm not sure why you would want the early attacks back, to be honest. They do considerably lower damage than the trained attacks. Anyway, hopefully I have answered your questions.