To tame the ossidon, you will need something that does torpor and a bunch of time. After you get all that, go find your Ossidon. Now you’re gonna shoot it with whatever you have for torpor. Then shoot it till it’s at 50%. Once it’s stunned start riding it. Now it’ll start making a slime ball and it’ll be spitting out icicles. run over with that slime ball and pick up the icicles in the ball to start the taming. You have two minutes to do this before it forces you off. after you’ve been forced off, repeat the tour process and get back on and just repeat that till it’s tamed.

Happy taming

Tame the Ossidon by tranqing it, it won’t fall asleep but a blue halo will appear. Jumping its back. It will make a snowball and start firing icicles.

Pick up creatures and icicles to fill the bars for maximum effectiveness. There is a timer that will kick you off its back when it runs out.

If it is low health, let it kill and harvest something. It’ll get some health back

Tranq it until 50% torpor, once at 50% you'll see stars around its head, go up to it and ride it. While riding it, it'll shoot icicles that you can roll over for increased taming meter. You can also roll over small dinos to increase taming meter. I'm not sure on this but in order to increase taming efficiency you have to collect max icicles and dinos before the timer runs out.

Use two people, use a Rhynoganthia and move it to a safe area. One person tranq it on a griffon if possible or quetz, hop off and ride it when it’s stunned. Second person grab your bird tame while you ride it. Rhynoganthia can move any large enemies or pickup the ossidon if he’s being destroyed. When he’s hurt stand next to a dead body and he will eat it and heal.

To tame these guys is the most annoying thing ever. But Ima tell you how. So first get something that does high torpor. Next find the one you want to tame. Shoot it with whatever you have for torpor till it’s stunted (when it’s stunted it will rock back and forth with cartoonish circles around its head). Then ride it. As you are riding it makes a slime ball. With the slime ball you will pick up the icicles that it shoots out. As you pick them up with it it gives taming. But you have two minutes before it kicks you off. But you lose no taming when kicked. It will take a couple of times before it’s tamed.

Your friend the unhappy parasaur

How to tame the ossidon:

1: craft around 150 tranq darts

2: find your ossidon

3: shoot the ossidon with the tranq darts until it becomes dizzy(blue stars will go around its head and it will stop attacking)

4: immediately ride/mount it

5: it will start creating a snowball of mucus, when it does this it will start spitting out icicles run over the icicles in order to gain taming percentage; you have 2 minutes each ride

6: repeat the process until it’s 100 percent!

Tips : if you run into the smallest wall it will forcefully launch you off

I recommend using a pyromane to tank the damage as it hits you

Avoid its icicles and ball running away from it no matter what, even if you are on a tame stay far away

Ok - gonna be a long one. First, pay attention to level as you would with any other tame to get the one you want. Try to isolate your ossidon - this will be difficult because he attacks nearly everything. You will have to tranq it. Asc level rifle and regular tranq darts will work but take more. Once he is sufficiently tranqed, blue stars will revolve around his head. You only have a few moments to then jump on his back and begin rolling around a bolus. You have to roll the bolus over the icicles he shoots AND try to pick up smaller creatures in the bolus. Each of these adds to the overall taming. Continue to roll around until the timer expires and you'll be thrown off. Best option is then to kill any strong creatures around the ossidon so it doesn't die. Let him kill weaker creatures to get his life back and repeat tranqing. Continue this process until tamed.

Tranq to 50%, approach and ride it, walk over ice Spears with ball to 50 to gain taming effectiveness. After timer repeat by tranqing until you can ride again. BE VERY CAREFUL NOT TO AGRO EVERYTHING AS IT WILL DIE.

try to do it out in the open, and don't break the ball by hitting something.

Passive tame

Get torpor to half, while it is dazed mount it.

It will make a mucus ball, when it spits out its ice spears roll over them to gain taming effectiveness and taming percentage. Will take a few times.

Rinse and repeat. Maybe have parachutes or tek boots for when you get thrown off.

Enjoy your new Ossidon.