This is a gold saving guide designed for those of us without tons of disposable income.
War Egg = 11 Million
Small War Habitat = 22 Million
That's a lot of gold most newer players hurt by the new pricing and breeding just can't reasonably afford. If you have the ability, I highly suggest pursuing the Viking Island Quest to at least get Thor to use for breeding. There's still time left to get at least the 2nd quest done for this dragon. This will enable you to obtain all the war hybrids without the 33 million gold investment.
Acquire Thor from quest #2 of the Viking Island Event. It's a commitment for sure, but imho it's worth the time, gold, food, and even gem investment (once you work the gem cost down by normal means).
Breed Thor + Flame for Juggernaut. This is a nice quick one, as failed attempts will only be 30 seconds. Juggernaut is a superior combat version of Thor, so don't feed Thor any higher than you need yet as he'll be breeding for a while.
Breed Thor + Coral. This one's a tad longer to do as it can still result in another Juggernaut (lower chance) or failed attempt taking 30 minutes (spicy or firebird). A successful 1 day 12 hour breed should produce A Redwood (War+Plant)...Leviathan (War+Water)...or a another Juggernaut (War+Fire). The reason I breed for Juggernaut first, is it's a good combat dragon, A decent gold farmer, and a quick guaranteed breed,
Depending on if you got Leviathan or Redwood, Breed...
Thor + Earth/Plant = Redwood, Colossal, or Juggernaut
Thor + Earth/Water = Leviathan, Colossal or Juggernaut
Breed directly for the last hybrid. Thor + whichever base element you're missing.
Voila' ! You now have every War hybrid without having to invest in either the War Egg or the War Habitat...saving 33 million gold until you choose to actually buy the nicer big war habitat.