So early on I got a call of the colossus and got me a red dragon. Using this unit is enough for the first couple of islands if you play smart. Eventually I managed to kite my way to shattera and ultrax to pick up some eggs.
then I got armageddon and two of the astral resistance items.
Needless to say Ive cleared out most of the game now with just red dragons and even if my tactic is a bit cheesy I do enjoy it
I will start any fight by waiting or depending on the enemies I will cast stone skin. Then If I have more then 600 hp when its my turn to move I just throw out armageddon. Rinse an repeat for 2-3 rounds while using rage for the mana bursts.
I was quite fun killing the 100 dragons in Montaro with just a few red dragons and the hardest encounter so far has been the Driller. But mana spring (for the extra defense and mana regen + stoneskin) saved the day in the end.
I actually think you can be able to beat the game with just red dragons if you focus a lot of defensive items and spells and just outlast the enemies.
Any input from anyone?