Fair warning, aside from Darksteel Citadel all the artifact lands are banned in sanctioned Modern tournaments. Possible replacements are Inkmoth Nexus and Blinkmoth Nexus. You should probably be able to pick up Inkmoths for fairly cheap in about a month or so(if not already) when all the Standard players start selling/trading them off due to the rotation. Not sure what Blinkmoth's go for/trade for however.