Griffin or ptera. Easiest with 2 people. Someone flies in and baits them out, the other swoops In behind and grabs all the eggs he can, praying a wyvrnn didn’t stick around
You can fly into the lava and it will glitch a fire egg into your inventory. It won’t let you drop it on the ground tho, but just put it in a dino inhibitory then take it out and it will allow you to drop the egg.