Does this trigger off itself? Like, if you use Old Wyk to get it out, does it trigger? I can't tell because this is a reaction to something entering play from death, but does that mean when it enters or when the ability bringing it back is triggered?

The important thing is whether this card is in play by the time you can trigger its ability. Whether it was in play when something it reacts to happened is irrelevant. This is true for all abilities in AGOT. So yes, it triggers off itself. —

Rules FAQ:

  • Craster is only immune to Omen card effects while he is in play, not while he's in the dead pile, so The White Shadows can resurrect him, and he'll enter play blanked.

  • If a character is killed at the end of the phase (e.g. by Tears of Lys), it will be resurrected and then immediately placed in its owner's dead pile. (Source)
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Rules FAQ:

  • The X is fixed during the resolution of the ability, and will not change if a different character becomes the top one in your dead pile.
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