Two Mirror Image bugs

Stormcrow

So, the first Mirror Image bug is pretty straightforward - if your opponent's hand is full, Mirror Image will not create a copy of a creature they control when it comes into play. (Implementation seems to be, if targeting an opponent's creature, create a card that's a copy of that creature in their hand, then move it to the player's hand; if the enemy's hand is full this fails.)

This I think explains the erratic behavior that some folks have noticed before.

The second bug I discovered in the process of replicating and confirming the first bug, and...well...it's REALLY weird.

First I cast a Mirror Image when they had a full hand and got nothing, as before. Then they dropped a Gisela, the Broken Blade on the field and ended their turn with 5 cards in their hand. I cast another Mirror Image, targeting Gisela, and got a copy added to my hand - but the card the game actually put in my hand was Brisela, Voice of Nightmares (the melded form of Gisela). Thanks to an extra swap, I managed to drop a third Mirror Image and target their Gisela again, then their turn came around and their Gisela smashed into my Brisela, and when my turn came around I took screenshots.

So...some kind of weird interaction between Meld and Mirror Image's copying mechanic, I guess?

Stormcrow

Update from further testing:

The second Mirror Image bug works when targeting your own creatures, too, and it appears to give you the transformed version of any card that Transforms. Screenshots testing it out on my own Westvale Abbey. (It appears to always give you the flip side - I targeted a Westvale Abbey and got an Ormendahl added to my hand; later on I tried it on Ormendahl and got an Abbey added to my hand.)