She seemingly got powers after taking merlyn place as omniversal guardian and is also called the white witch now.
Tarot got resurrected during necrosha and was alive during dox whereas ruth and destiny were not. The question was about resurrecting irene and ruth and moira refused because "no precogs on krakoa". There isn't much she can do about tarot because she's alive and kicking unlike destiny and ruth.
In an interview tini inadvertently gave a doylist answer to your question; "as far as tarot and its role versus something like actually predicting the future, tarot isn't about specifically telling the future, it's about examining the part you'll play in it - because the future is always in flux.".
??? what could possibly make you think that lol
I think he's allowed because it was an extra council mission aka black ops mission and since his actions won't reflect on the council as per magneto words they're moving without the council's blessing.
In gsxm:storm warlock morphed/made him a combat suit with an energy canon propulser so I'm guessing warlock will also make him a sword.
In a group interview the x team gave jordan white mentioned how they were two characters he thought were going to make it in storyline but ended up being cut and I think he was referring to them.
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I thought it was in character for mystique to bring up orchis given days of future past and how the nimrods are a upgraded sentinels.