To tame: I suggest using a simple flying animal you can ride such as a pteradon or maybe a griffin. Always before you fly in to get your egg you want to build a bed a small distance from the nest. Next try to be efficient when going into the nest, you don't want to get killed, last if you have a wyvern trailing you try to dodge between rocks or trees but just try to keep on running guntil the way Erin gives up. You simply just place a small building and about 10 campfires with lots of fuel and wait for your egg to hatch!🙂👍