These decks should generally not have any two-card infinite combos that can happen cheaply and in about the first six or so turns of the game, but it's possible the long game could end with one being deployed, even out of nowhere
Liliana, Dreadhorde General is a great finisher, while Murderous Rider deals with anything and helps gain some life back too
It's great in loads of other places too, like Boros Voltron where you give your leader double strike for attacking to kill twice as fast with Commander Damage and then the power boosts from equipment or auras
With a pull rate of 1/684, and appearing in the Trainer Gallery which in and of itself has an overall rate of 1/563 for individual cards, its unique design doesn't seem to be easy to obtain
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The land ratio you're looking at should be about 17 or 18 lands to 23 or 22 nonlands