When Nalissa uses her Entracement level 4 ability to skip her opponent's turn, do they enter their turn at all? Our interpretation is no.
Rootclaw entered Flight of the Eagle, so he cannot be attacked until his next turn. Nalissa uses her Entracement ability to skip Rootclaw's turn, since it was skipped he did not enter his turn and still remains in Flight of the Eagle and cannot be attacked.
Is our intepretation correct?
I believe you are playing correctly because when a player is forced to skip their turn, there is no turn for him or her to operate. This is evident when no cooldown counter is moved towards the ready space. Therefore, it is not a good idea to trigger Entrancement when Rootclaw still has Flight of the Eagle in effect.