As standard for Secret Lair 'drops', the Fortnite mini-set will only be available to pre-order from the Secret Lair website within a narrow time window - in this case four days, from 9am PT on Thursday, July 21 to the same time on Monday, July 25
You can then cast any of the cards exiled this way for the rest of the game, regardless of whether Etali is still on the board

As detailed by the Commander Rules Committee, these are the banned cards in the format: Any card using the keyword Ante Any card permanently removed from the game by Wizards Any cards with the Conspiracy card type Ancestral Recall Balance Biorhythm Black Lotus Braids, Cabal Minion Channel Chaos Orb Coalition Victory Emrakul, the Aeons Torn Erayo, Soratami Ascendant Falling Star Fastbond Flash Gifts Ungiven Golos, Tireless Pilgrim Griselbrand Hullbreacher Iona, Shield of Emeria Karakas Leovold, Emissary of Trest Library of Alexandria Limited Resources Lutri, the Spellchaser Mox Emerald Mox Jet Mox Pearl Mox Ruby Mox Sapphire Panoptic Mirror Paradox Engine Primeval Titan Prophet of Kruphix Recurring Nightmare Rofellos, Llanowar Emissary Shahrazad Sway of the Stars Sundering Titan Sylvan Primordial Time Vault Time Walk Tinker Tolarian Academy Trade Secrets Upheaval Yawgmoths Bargain
Get comfortable with this flow, and youll start spotting new ways to outplay your opponent
If it does, it enters the battlefield with its front face up