At the start of your turn, you get a 1/1 Eldrazi Scion token that can be sacrificed to add one colorless mana to your mana pool
Discard the Future cards you revealed this way, and shuffle the other cards back into your deck
The most valuable "Mayakashi" Spell/Traps are "Mayakashi Return", the Deck's search Spell, and "Ghost Meets Girl - A Masterful Mayakashi Shiranui Saga", a powerful suppression Trap that prevents the opponent from Special Summoning from all locations except the Graveyard for a turn, if the player Tributes a "Mayakashi" or "Shiranui" Synchro or Link Monster
Im a fan of protection spells that leave your board stronger than they were before the effect you needed protection from, and thats exactly the Mutational Advantage youre getting
END STEP All in all, showcase art styles have been an excellent addition since Throne of Eldraine s release, and its great to see some of these return
On the owner's turn, it's used to stop a hand trap from interrupting a strategy