Inkmoth Nexus is a rare Land card from Mirrodin Besieged (MBS), collector number 145. Current market price: $13.59 (foil $27.23), TCGplayer market prices via Scryfall.
{T}: Add {C}. {1}: This land becomes a 1/1 Phyrexian Blinkmoth artifact creature with flying and infect until end of turn. It's still a land. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)