In a recent game two of my rival houses met on the battlefield, the Lannisters fending off a Greyjoy assault. The Lannister player used his Tyrion card and forced the Greyjoy to chose another leader, Greyjoy then played Aeron Damphair and used his special ability to replay the leader card originally denied by Tyrion's special ability.

I can equally see how one could argue that Tyrion barred the card for that conflict and thus that leader cannot be replayed through Aeron, as well as see how one could argue the opposite. What are your thoughts? I'm merely curious in case this coincidence should happen again in a future game.

The answer to this one lies on the bottom left of page 19 in the rulebook:

1. Any text abilities that include the terms "Ignore" or "Cancel" are first resolved in the turn order of the iron throne track.

2. Any text abilities that include the term "Immediately" are resolved in the turn order of the iron throne track.

In this specific example Tyrions ability is resolved first no matter the turn order of the iron throne track because Tyrions card includes the term "Cancel"