Is it normal to spawn a pod of 3 Codex aliens?

Playing XCOM2 on easy veteran difficulty and just spawned a pod of triple Codexes. I'm wondering if that's normal, or if my RNG is particularly helpful today.

Solution 1:

Yes, this is normal.

The longer you play the campaign, the stronger the groups of enemies you will face in random battles. Most enemies which you encounter in a story mission for the first time will then start to appear as a regular random encounter. This includes Codexes. You seem to already have a Ranger with the maximum rank and the best shotgun in the game, so you seem to be already playing for a while.

So if you start hitting your skill ceiling, you might want to focus on completing the story objectives and finish the game.