16 cards where (the card types include “artifact” and the card types include “land”) and it’s legal in Pauper

Ancient Den (Commander 2021 #276)
Darkmoss Bridge (Modern Horizons 2 #245)
Darksteel Citadel (Commander 2021 #285)
Drossforge Bridge (Modern Horizons 2 #246)
Goldmire Bridge (March of the Machine Commander #407)
Great Furnace (Commander 2021 #292)
Mistvault Bridge (Modern Horizons 2 #249)
Razortide Bridge (Modern Horizons 2 #252)
Rustvale Bridge (Modern Horizons 2 #253)
Seat of the Synod (Commander 2018 #278)
Silverbluff Bridge (Modern Horizons 2 #255)
Slagwoods Bridge (Modern Horizons 2 #256)
Tanglepool Bridge (Modern Horizons 2 #257)
Thornglint Bridge (Modern Horizons 2 #258)
Tree of Tales (Planechase #140)
Vault of Whispers (Planechase #141)

Though this query has ended, its relics still slumber in New Argive.