Adding a sacrifice outlet to your mana base makes it much stronger than it would be if it was just lands that tapped for mana, especially considering how hard it is for your opponent to interact with it
When I find that Soulherder decks are performing too well Im more likely to trim back the power of the assorted enter the battlefield creatures in a Cube than to remove Soulherder, as the power of Blink decks tends to be more correlated with those things than how good your deck is at blinking creatures
The two sides of this deck can feel somewhat disparate at times, but Magical Maneuvers helps close the gap
Force of Will still stands as one of Blue's most elegant and powerful designs
Bloom Tender Mostly employed in five-color decks, Bloom Tender is still an engaging option for Elf decks that want to branch out into more colors (say, with Morophon, the Boundless or Voja, Jaws of the Conclave as their commander)
This modal spell also allows you to deal with a flying threat if need be, which is always welcome in mono-green
