1 The One Ring One ring to rule them all
By locking down the opponent's biggest threats, she protects her allies from being challenged while keeping the paths completely clear to quest for victory without fear of immediate retaliation
With access to blue, this lets you keep up the threat of counterspells, removal, or something nasty with Flash, and if you dont end up needing to use any of that, you get to play this at the end of an opponents turn and untap further ahead in cards and/or mana
That just leaves the Imperium factions deck, Forces of the Imperium, which should be out later today, on PleasantKenobi's YouTube channel
If the format shapes up as I think it will, this card should see play but it may reside primarily in sideboards