There's so much value concentrated in one card that it sells for more than half of a play booster box
The video above, by YouTuber smpratte, shows that exact card shortly after its sale
Some other fun toys in your colors I quite like include Mirari's Wake, Mirri, Weatherlight Duelist, Privileged Position, Lavinia, Azorius Renegade, Linvala, Keeper of Silence, Yosei, the Morning Star, Exalted Angel, Sublime Archangel, Eiganjo Castle, Council's Judgment, and Questing Beast
Because of the color restrictions, my money would be on a predominant inclusion in Narset, Enlightened MasterNarset, Enlightened Master decks
Ultima removes the huge upsides of these lands while still leaving your opponent with a mana source to use
Hullbreaker Horror This giant kraken looks like an ideal control finisher for standard