Neutral.
Plot. Income: 4. Initiative: 7. Claim: 1. Reserve: 6. Plot deck limit: 2.

Scheme. War.

When Revealed: Each player chooses up to 3 characters he or she controls. Kill each character not chosen (cannot be saved).

Tomasz Jedruszek
Core Set #26.

Link: Decklists

Wildfire Assault
Reviews

Rules FAQ

If a single effect affects multiple players simultaneously, but the players must individually make choices to resolve the effect, the first player chooses first, followed by the other players in player order.

So the First Player chooses his characters first, regardless of who revealed Wildfire Assault. After all players choose their characters, each character not chosen is killed simultaneously, and any interrupts like Shireen or Bastard Daughter (which are resolved before the kill resolves, but after it initiates) alternate between players, starting with the first player.

If you have a character with "immune to opponents plot effects" that would normally be immune, do they die if it was your wildfire? I assume yes? — Praetorian1011 43
Yes. It's your plot effect, not your opponent's, so the immunity doesn't apply. — mplain 176
Can I still play the interrupt of duplicates as it says " it cannot be cancelled"? — volerion 1
No. Wildfire doesn't cancel a Dave. Rather it prevents the save from being attempted. — scantrell24 2405