was playing AI against a top 50 deck, don't remember who, but i remember they didn't have fire either.
1. wasn't playing fire, and i had removed all cards before building deck
2. not using code
3. not creature in play caused by pandemonium or twin universe. i drew the card.
4. reverse time doesn't explain it, as neither side had pheonix.
5. i had no red quantum, so couldn't play the card.
6. was not a pet. hadn't visited oracle yet.
Happened again today, again against AI, top 50 deck.
This time it was a spark. I don't even own any. Don't recall opponent playing any either.
Not sure I know how to post a screen shot but i'll try to capture if it happens again.