I don't know what's more baffling
1.) Yi Sang having obsidian, or at least a water bucket portal trick.
2.) Yi Sang being able to get through the Nether.
3.) Yi Sang not only finding a shriveled up Ghast baby but also knowing what to do with it
4.) Yi Sang having the snowballs to tame it.
5.) Or Yi Sang not getting motion sickness like he did on the ship while riding on our Ghast buddy.