Sakashima the Impostor [Mystery Booster] XY66 With new cards like "Darmok"

With new cards like "Darmok" and the "Rule of Acquisition"

When Kor Skyfisher enters the battlefield

This card is named My First Tome

and the Gamemaster Screen Pack bundled together in a premium collector’s slipcase

Set: Battlebond Type: Creature — Human Wizard Rarity: Rare Cost: {2}{U} When Spellseeker enters the battlefield

Sakashima the Impostor [Mystery Booster] XY66 With new cards like "Darmok"Set: Mystery Booster Type: Legendary Creature Human Rogue Rarity: Rare Cost: {2}{U}{U} You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step."