You can use any of the Dragons with this move-set. I ordered mine from least health in slot 1 to most health in slot 3, that way the backline damage doesn't leave you empty-handed.
Script thanks to Prudentius
The strategy offers a TD script that can be used with the TD Script addon. You can copy the script by clicking on the button to the left of the pets.
This strategy has been built to be as fast as possible.
The strategy takes a while. Sit back, get yourself a warm drink and relax the scenery.
Not every strategy can be bullet proof. This is one of them. You might have to restart it, since there are some random elements that increase the risk of your pets failing. Don't blame them, please!
You want a strategy that does the job in one shot? This might be the one for you!
Some instructions are more difficult to follow than others. That's exactly what you might find in this strategy!