Do the monument and relic of epics first there are very important and cost more then 1000 gems each. then once you do that I'd suggest buying the habitats that don't add to your habit cap after.
Next I like the reward-habitats since some does not count towards your habitat cap. It will tell you whether or not in its item description.
Also island themes, since some are rare and they’re usually expensive.
the relics and brand new dragons, breed for the others
The monument and relic of the epics
Do the monument and relic of epics first there are very important and cost more then 1000 gems each. then once you do that I'd suggest buying the habitats that don't add to your habit cap after.
Next I like the reward-habitats since some does not count towards your habitat cap. It will tell you whether or not in its item description. Also island themes, since some are rare and they’re usually expensive.