Guild Wars 2

I put 4 random rares in the mystic forge, I received “Dire Ceremonial Stave of Accuracy”. I put in 4 more random rares and it yielded exactly the same item. In a row. What were the chances? Did it happen to anyone else?

For the note, I’m not complaining. It’s nice to get 2 exotics in a row.

It’s very common, so always forge in batches of two or more.
The forge is pseudorandom.