Action: Kneel your faction card to remove another Tyrell character from the game until the beginning of the next phase.
"Until the beginning of the phase" is an unusual timing that we didn't have before.
1) Does this happen *during* the next phase? Relevant for "enters play during the X phase" abilities (e.g. Olenna's Informant).
2) The FAQ says that the expiration of lasting effects "until the end of the phase" is "the precise moment at which the phase ends, and anything that occurs as a result of the next two steps occurs outside of the phase". Does this mean that any Reactions to a game state change caused by the expiration of such lasting effect would be triggered outside of any phase? (similar to how Tears of Lys cannot trigger Crossroads Sellsword)
3) Is the game state change caused by the expiration of Mace Tyrell's lasting effect considered to be "caused by a card ability", i.e. does the plot Barring the Gates prevent the character from returning to play?
Some people argue that this should be similar to how the expiration of a "-X STR" lasting effect doesn't cause Randyll Tarly to trigger, however that interaction is governed by the RRG entry that says: "The expiration of a lasting effect (or the cessation of a constant ability) is not considered to be generating a game state change by a card effect." 'Card effect' and 'card ability' are different things, e.g. ability costs are not card effects but are part of a card ability (Barring the Gates blocks Podrick Payne).
4) If the character removed from the game by Mace Tyrell cannot reenter play because another copy of it is in the dead pile, does it remain removed from the game forever, or will it enter play as soon as Close Call removes the other copy from the dead pile?