I'm in a game against a Lich deck. There was a point, after some much annoying contesting, that the enemy Lichling managed to capture my font a few times, procing Forced Ignorace a few times. By the end of the game, I had 3 runes in my rune dock that I couldn't reveal. It's not that they were concealed, it's that I was completely unable to reveal them. Beginning of turn I didn't reveal any more runes, and I could scry to deal 7 damage to my Avatar, but it wouldn't reveal a rune.
