Two by Four was first released in the set Mystery Booster 2, illustrated by Sam Denmark
Source: Wizards of the Coast Final Fantasy contained a normal art card in 30% of Play boosters, and foil-stamped versions in an additional 5% of boosters
Without much to go by since his ability depends on the contents of the Necron deck or perhaps a monoblack Vehicles deck, we couldn't see much of an opening to use Szarekh as the commander of his own Warhammer 40,000 deck, but, at least at this present moment, we could see him working well in a deck led by Greasefang, Okiba Boss from Kamigawa: Neon Dynasty
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All in all, I think this card could certainly see play as a top-end for aggressive decks, as he can very quickly end a game, if left unchecked