My dad came up with a fool proof strat, using a high level procoptodon, you can circle around the lava and aggro every magmasaur, but you are much faster, so do a circle and while they’re on the other side, hop off and grab the eggs, get back on and hop around, before you know it, you have every egg in cave
I’ve found the eggs. The eggs are located inside the volcano in an amethyst cave. There are lava pools with groups of magmasaurs in them. There are small islands with craters in them, within those craters the eggs are nestled within. But be careful there are lots of magmasaurs, magma, and what look like varient rock elementals.
Easiest thing to do is to spawn at the East zone and go to the Egg-Straction mission. Then, take the first left in the cave and you should end up by the nest. A good strategy is to wait until there aren’t any magmasaurs by an egg, then ask HLNA to teleport away, and right before you teleport, grab the egg.
Get yourself a good dinosaur with a hefty amount of attack, that can kill them fast. if you ever want a chance to get one of their eggs you need to be able to kill them fast, because they can shoot a shot of magma that can kill you even while mounted. Be extra careful running through the volcano! If it starts to erupt, teleport the hell out of there. You will instantly die when it does.
If you can transfer your Rock Drake to Genesis it is pretty easy to steal Magmasaur eggs with them. Just turn invisible look for the best egg to steal. Quickly dismount grab the egg get back on and haul your butt out of there.
There are some egg which are very easy to steal while others are not the main nest is difficult to steal from with a blood stalker as there a ton of magmasaurs but the smaller nests are super easy to steal from dont use the parachuting maneuver to steal the egg just grapple above it and press c slowly lowering yourself down but not to slowly if you have a whip use it for a less risky egg-straction.tip don't use a rock drake because it takes all the sport out of it same with rock drakes if you use a blood stalker to steal your first egg its too easy so not point. If you stole your first rock drake egg useing a bloody stalker then you technically didn't even tame one.