Where did these cards come from?

Magic: The Gathering - Puzzle Quest MtGPQ Bugs & Technical Issues
1

On 3.1 tonight my deck included 2 cards (Oketra’s Attendant and Winged Shepherd) that are not in the deck I used or my other saved Elspeth deck. See battle log.

https://imgur.com/a/NJDyo

2

Wasn’t me!

3

Twas.