Neutral.
Plot. Income: 4. Initiative: 1. Claim: 1. Reserve: 6. Plot deck limit: 2.

Kingdom.

When Revealed: Search the top 10 cards of your deck for a Lord or Lady character and put it into play. Shuffle your deck. Then, sacrifice a Lord or Lady character.

David Demaret
Kings of the Isles #48.

Link: Decklists

Heir to the Iron Throne
Reviews

Rules FAQ

  • If you do not find a Lord or Lady in the top 10 cards, the pre-then aspect of the effect did not resolve successfully and thus you cannot sacrifice a Lord or Lady. You can choose not to find a Lord or Lady despite there being a Lord or Lady in the top 10 cards.
  • If you find and put into play a duplicate of a Lord or Lady, the pre-then aspect of the effect did not resolve successfully and thus you cannot sacrifice a Lord or Lady.
When one reveals a lord or lady character, a lord or lady character on the opponents tableau can be sacrificed? — MrShtark 1
No, as you do not own or control your opponents board state. You can not use their characters to pay your costs. — Zukin 161

If you can't comply with the first sentence, you cannot do what is followed by THEN. i.e. no sacrifice after you can't find (or don't want to find) a Lord/Lady, or if you can't put it into play (barring the gates). This is confirmed by FFG Official.

When one reveals a lord or lady character, a lord or lady character on the opponents tableau can be sacrificed? — MrShtark 1