Note that the creatures destroyed do not have to be nontoken creatures, so The Phasing of Zhalfir cant fully clear a board by itself
Until end of turn, you may look at the top card of your library any time, and you may play lands and cast spells from the top of your library
Decks that run Beach Court tend to run 1-2 copies of the card
With plenty of mana available we can easily cast and activate the Stone on the same turn
I personally play this deck alongside an Impcantation engine to speed things up, but even as a pure-build, this deck is utterly fantastic
//// Arcee, Acrobatic Coupe Color indicator: red, white Legendary Artifact Vehicle 2/2 Living metal (As long as it's your turn, this Vehicle is also a creature.) Whenever you cast a spell that targets one or more creatures or Vehicles you control, put that many +1/+1 counters on Arcee