Crystal wyvern easy passive tame. If server allows, run onto its back between the shoulders and feed it crystal in your last slot with [e]. On it's shoulders it will be less likely to drop you. Carry food and drink, have a flyer on follow if you can, and parachutes just in case.

You can tame 15 or lower levels with normal crystals but for the higher ones you will need primal crystals

I would get one of these as soon as you can. They’re very quick and reasonably strong for how easy they are to get

Knock it out. Take crystals and wait on its back till it wakes up!