izzet mtg cards card that can shoot down the fastest deck in Standard spikes 560% You may cast the top card of your library if its an instant or sorcery card Izzet Charm MTG - Return

Now, tap the card itself to pay for the activated ability cost (that's the little tap sign after the mana requirements, but before the colon)

Honorable Mentions: Transforming Creatures Quick shoutout to creatures that start off smaller, but eventually transform into larger bodies

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This is a 3-mana total investment, and any deck can tutor for any land

Oubliette Very similar to Oblivion Ring, Oubliette is a black enchantment that keeps the card on the battlefield, which is crucial to play around death triggers or against ETB effects that might trigger if the enchantment were destroyed

Thats just an insurmountable amount of power and toughness generated each turn for free