I just believe it should work as one would believe it would from how it's written where on the turn it's deployed, at the end of that turn, the amount it is boosted by should be doubled. So if at the end of the turn it's played it's not boosted it does not ever get a double boost. Or they should change the wording to indicate how it actually works.
So 1 and 3
It's still not clear whether this was intended or not. Basically, what we can say is that the card is not functioning the way the card describes.
Deploy: On turn end, double the amount of boosts on self.
Based upon what the description
does say, all of the following should be true:
1.) IF I have
any active boosts on the card, they will
all be doubled.
2.) IF I do not have an active boost on the card, nothing will be doubled.
3.) The doubling effect, if any, applies only to Aglais (read: "self").
4.) The doubling effect occurs at the end of the turn.
5.) Since the "Deploy" tag is added, this doubling effect should only apply to the turn the card was played.
If anything above is not happening, or if more is happening, then it's indicative of an issue somewhere. My goal here is to clarify what needs to be sent into Support. From the sound of it, it seems that her ability will trigger during turns where it should not apply. That's what needs to be sent in.
Speculating about how it could work differently is fine, just ensure that's not part of the bug report.