Deduce

Deduce (Murders at Karlov Manor)
Ina Wong

Draw a card. Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

"Of course! It was all so obvious. I should have made the connection days ago." —Alquist Proft, case notes

Deduce (Murders at Karlov Manor)
Quintin Gleim

Draw a card. Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Proft lit up like a man who had just been handed a glorious and unexpected gift. "I know who's responsible for this," he said. "And I can prove it."

Roxanne, Starfall Savant (Outlaws of Thunder Junction Promos)
Ina Wong

Whenever Roxanne enters or attacks, create a tapped colorless artifact token named Meteorite with "When this token enters, it deals 2 damage to any target" and "{T}: Add one mana of any color." Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.

Deduce (Murders at Karlov Manor)
Ina Wong

Draw a card. Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

"Of course! It was all so obvious. I should have made the connection days ago." —Alquist Proft, case notes

Roxanne, Starfall Savant (Outlaws of Thunder Junction)
Ina Wong

Whenever Roxanne enters or attacks, create a tapped colorless artifact token named Meteorite with "When this token enters, it deals 2 damage to any target" and "{T}: Add one mana of any color." Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.

Argothian Opportunist (The List)
Ina Wong

When this creature enters, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

"Nature adapts. So should we."

Markov Baron (The List)
Ina Wong

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Lifelink Other Vampires you control get +1/+1. Madness {2}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Roxanne, Starfall Savant (Outlaws of Thunder Junction Promos)
Ina Wong

Whenever Roxanne enters or attacks, create a tapped colorless artifact token named Meteorite with "When this token enters, it deals 2 damage to any target" and "{T}: Add one mana of any color." Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.

Argothian Opportunist (The Brothers' War)
Ina Wong

When this creature enters, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

"Nature adapts. So should we."

Roxanne, Starfall Savant (Outlaws of Thunder Junction)
Ina Wong

Whenever Roxanne enters or attacks, create a tapped colorless artifact token named Meteorite with "When this token enters, it deals 2 damage to any target" and "{T}: Add one mana of any color." Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.

Party Thrasher (Modern Horizons 3)
Ina Wong

Noncreature spells you cast from exile have convoke. (Each creature you tap while casting a noncreature spell from exile pays for {1} or one mana of that creature's color.) At the beginning of your first main phase, you may discard a card. If you do, exile the top two cards of your library, then choose one of them. You may play that card this turn.

Roc Hunter (The Brothers' War)
Ina Wong

Reach

"Never track the roc itself with your eyes, for it will swoop with the sun at its back and blind you. Instead, track its shadow and, when it's almost upon you, heave your javelin upward with all your might."

Markov Baron (March of the Machine: The Aftermath)
Ina Wong

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Lifelink Other Vampires you control get +1/+1. Madness {2}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Rakish Scoundrel (Murders at Karlov Manor)
Ina Wong

Deathtouch When this creature enters or is turned face up, target creature gains indestructible until end of turn. Disguise {4}{B/G}{B/G} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.)