draw a card artifact mtg Pojo's Magic The Gathering of the Day Artifacts that let you draw

Ratchet, Field Medics convert trigger is anytime you gain life, and when you do you can return an artifact with a converted mana cost less than or equal to the amount of life you gained straight to the battlefield

If it ever survives longer than that, it will take over the game by itself

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Quandrix, the Proof Quandrix, the Proof has the benefit of many great chaos cards coming in the form of instants and sorceries

All this is just buying time so Badgermole Cub can ramp you hard enough to tutor a Craterhoof with Nature's Rhythm and roll over your opponent