mtg 2019 core set booster box Magic: The Gathering and a premium promo card of any rare or mythic rare in the set. Magic The Gathering Core Set

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Probably best with Sneak Attack /Shallow Grave style things but value and delay in such decks rather than a win condition

Silundi Vision does that, and you can find a counterspell, an infinite combo piece you need, a tutor, or a removal spell

The only downside is that you dont get colored mana, so you are restricted on the spells you are able to cast

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In formats like Explorer where you can have more than one copy of a given card, you can have Tergrid plus the other side of the card (Tergrid's Lantern) in play at the same time, and thats a nasty combo