(This happened in Arena today, I was playing Demon Hunter).
Felosophy was glowing in my hand when it probably shouldn’t have been.
It was the right-most card so it was probably glowing due to Outcast being active.
However, there were no Demons in my hand so the card would not do anything.
Therefore I doubt it should have been glowing, because that gives the impression that it’s ‘a good time to play the card’.
The other cards in my hand were Fishy Flyer, Claw Machine, Dragonmaw Sky Stalker, Soulshard Lapidary, Consume Magic, Carnival Clown. In that order, followed by Felosophy.