Etzel is a wonderful dragon at the time you get him. Freeze can take out huge blocks of towers, and Summon Warrior is a great meat shield that adds some dps. To top it off, Archer Resist is immensely useful at this level as lots of players still have plenty of archers in their defense.
Slynx and Huli will breed Etzel for just 240 tokens if you can wait that long.
Maximum Attack: 29,988
Maximum Health: 229,345
Guide to Etzel