Oathkeeper, Takeno's Daisho [Champions of Kamigawa] Beta Edition put one of those cards

put one of those cards on top of your library and the rest on the bottom of your library in any order

you may sacrifice an artifact

Whenever a land enters the battlefield under your control

Set: Kaladesh Inventions Type: Artifact Creature — Thopter Rarity: Mythic Cost: {0} Flying

sacrifice Serendib Djinn

Oathkeeper, Takeno's Daisho [Champions of Kamigawa] Beta Edition put one of those cardsSet: Champions of Kamigawa Type: Legendary Artifact Equipment Rarity: Rare Cost: {3} Equipped creature gets +3 +1. Whenever equipped creature dies, return that card to the battlefield under your control if it's a Samurai card. When Oathkeeper, Takeno's Daisho is put into a graveyard from the battlefield, exile equipped creature. Equip {2}