Crystal isles is definitely the map for running drops! With one of these guys (preferably tropical because of their hydration when they hit the water which buffs their speed) you can get loads of good blueprints super easy by just flying around the map picking up all of the drops you see! Using this method I easily got loads and loads of amazing blueprints in just 1-2 hours, including a mastercraft crossbow blueprint and an ascendant flak chest blueprint, among loads of good saddle blueprints! Please spread.
Tropical wyverns spawn near the beach and have a water buff, like the spino, blood wyverns spawn in the forest that has red trees and also the red trees can give charcoal and blood wyverns can drain life from other creatures/ tames/ people and give your blood wyvern health if it is hurt at all. Ember crystal wyverns just breathe fire, blood and ember crystal wyverns are better for pvp. I recommend, if you have it, use the bone wyvern skin so they can’t tell what type of crystal wyvern it is. Good luck on taming them! (I play on Xbox so I can’t tame them :( )