When a Ghast blows up a Nether Portal, there should be a small chance to convert the Portal's corner blocks to Crying Obsidian.

I'm sure a number of you have had a sad Ghast shoot its fireball all sad-like, and lo and behold the explosion hits your Nether Portal, breaking it.

Well, I think when the portal breaks, it should have a chance to convert the Corner blocks of the portal (assuming they exist) into Crying Obsidian.

It makes sense. The (arguably blue to me) purple stuff is basically Portal Juice, and the explosion would probably splash some on the portal.

Keep in mind, This will only apply to the corner blocks as those are not needed for the portal.

I don't want a situation where you basically come in next to a Ghast, who blows it up and now you have to go on an epic quest for gold to barter with Piglins a ~9% per single piece of Obsidian, but oh no! You forgot your Flint and Steel, so now you've got to also raid Fortresses and Bastions for iron and find Gravel too, all to get home without dying.

A Ghast blowing up your portal is something you can't always control or prevent, so I don't want that to ruin your portal and make it totally unusable, even with the proper tools.

... but if you forget the Flint and Steel, likely the same one you used to light the dang thing, well, that's on you.

Edit: Seems like a chunk of you want it to also affect the main portal frame. If that were to be the case, I'd make the chances for that to be lower than the corners. The main intent of this suggestion was to be a neat way of obtaining Crying Obsidian that makes sense with lore, while not being annoying in a gameplay sense.