House Stark. Non-Loyal.
Location. Cost: 4.

Contested. Stronghold.

Reaction: After a character enters play, kneel your faction card and sacrifice Harrenhal to kill it.

Harrenhal had seen more horror in its three hundred years than Casterly Rock had witnessed in three thousand.
Matthew Cowdery
Ghosts of Harrenhal #82.

Link: Decklists

Harrenhal
Reviews

Rules FAQ:

  • "After X enters play" and "After you marshal X" reactions share the same timing window, so if one player marshals Littlefinger and the other player has Harrenhal in play, the first player gets the first opportunity to trigger any relevant reactions. If Littlefinger gets killed first, then his ability cannot be triggered because he is no longer in play.
mplain 176
How does this apply to Maester Aemon (Core)? Does Harrenhal effectively kill him when entering or can he kneel to save himself? — DrNovak 1
No. You marshal Maester Aemon, your opponent reacts to that by using Harrenhal to kill him. Maester Aemon, being in play, interrupts the resolution of Harrenhal's ability, and cancels it. — mplain 176
I mean saves himself from the kill, not cancel. Sorry. — mplain 176