You usually get to cast them until the end of the current or following turn
Nature's Rhythm gives you a card that can snag a mana dork when you need to ramp, an Eternal Witness when you need some recursion, a Bane of Progress when you need some removal, and a Craterhoof Behemoth when you are ready to win
Milling your opponents deck is an easy and surefire way to make sure they dont have the ability to come up with a response to your damage
However, as pointed out on Twitter by PokeTCGAlerts and Joe Merrick of Serebii.net, GameStop will reportedly sell the Pokemon TCG: 30th Celebration Ultra-Premium Collection: Day & Night box sets for $600, over triple the $180 MSRP
Ill go more into Brawl in future articles
They do what they say on the tin, they do it effectively and they do it for a bargain