So do I understand this correctly? There is no way to save/cancel pulled under since it happens at the end of the dominance phase. This card seems a bit undercosted for 3 to me then. any character with dupes and attachments is completely vulnerable to 1, 3 cost non unique card. and its not even house specific (ie house Greyjoy only). I do not see why there is not more hate and uproar about this card. Without fast challenge or some such attachment removal ALREADY in play you lose a character no questions asked if Greyjoy goes second.

You do understand correctly:

(2.6) End of the Phase
Each end-of-the-phase Framework Action
Window should be played without step
two (Save/Cancel) and without step five
(Responses). No triggered effects can be
played after the initiation of the end of the
phase.

There isn't more uproar because 3-gold for a delayed kill, no matter how guaranteed, is a huge gamble and investment. There are almost always more immediate things to spend the gold on. It's one of those cards that seems unreal and broken in print, but is not as easy to commit to in practice.

Tin link makes expensive attachments (expensive varies player to player but 3 gold qualifies under pretty much any scenario) unpopular with a lot of players, and considering that maesters still seem prevalent those attachments dont see a lot of play.