User blog comment:ЭЛЯ (не могу войти в аккаунт)/I've seen such a dragon .../@comment-24428395-20140922173109

It was initally available for iOS user only. In Later stages SP planned for Android Users. However it had many bugs and later it was pulled back. Then in few days againg DC School was launced with Double Basic Elements like Double Terra, Double Flame, Double Nature, Double Electric, DOuble Metal, Double Sea & Double Ice and along with a Surprise of Uncle Sam Dragon. However for Android users many where not able to collect them all due to some issues