Osgood, Operation Double [Doctor Who] Elemental Octopus −7: Exile the top seven

−7: Exile the top seven cards of your library

(It's an artifact with "T: Sacrifice this artifact: Exile the top card of your library

Argivian sentry

Set: Innistrad: Midnight Hunt Prerelease Promos Type: Creature — Dragon Rarity: Mythic Cost: {3}{R} Flying

then search your library for a basic land card

Osgood, Operation Double [Doctor Who] Elemental Octopus −7: Exile the top sevenSet: Doctor Who Type: Legendary Creature Human Alien Shapeshifter Rarity: Rare Cost: {2}{U}{U} When you cast this spell, create a token that's a copy of it, except it isn't legendary. {T}: Add {C}. Spend this mana only to cast an artifact spell or activate an ability of an artifact. Paradox Whenever you cast a spell from anywhere other than your hand, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")