I love Planetary Annihilation and what it represents which is Wizards experimenting with ways to punish big ramp decks without screwing everyone else
This is a recurring theme for most trading card games (TCG)
Were looking at eight cards in the $2-$5 range, two on the low end of the $5-$10 range, and three $10+ reprints
Exalted is great with Commanders you seek to kill with Commander Damage, which isn't that uncommon in Jund
Commander, Five-Color Decks, and More Tri lands are especially valuable in Commander, where three- to five-color decks are common
That said, white has so few viable designs in the mana ramp space, theres going to be some risk of that with any new mana ramp card designed for it