Artifact Lands

[DeMarki]

If I trigger a Powder Keg for 0 does that mean that it will destroy all of my artifact lands?
In what kinds of deck are they suitable and why replacing basic lands for them?

[Freelancer]

1) This should probably be in the rules forum
2) Yes a powder keg with 0 counters will destroy artifact land
3) Affinity comes to mind as a deck that might wants to run artifact lands (the faster version), they could also be suitable for thirst for knowledge based decks when they have to little artifacts to ditch (usually unpowered variants). They have also been used in conjunction with crucible of worlds and goblin welder to allow infinite slavering and tutoring for crucible lock with intuition (a welder and a artifact in play, tutor for crucible-strip-artifact land weld in the crucible and start stripping there land). The biggest disadvantage to artifact lands is that they are non-basics and thus can be hit by wastelands/b2b/blood moon.

[DeMarki]

Does it worth replacing 4 basic lands to 4 Artifact lands just to have more targets for Tinker? (In case someone doesn't run many artifacts)

[Freelancer]

It totally depends on your metagame, if its full of wastelands than your better of with running something else in place of the tinker-colossus plan. If there are hardly any wastelands than there is little reason to not run them (they also make thirst for knowledge considerably stronger), remember though they can be hit by artifact hate which (depending on your metagame again) could be rampant in sideboards.
So its up to the metagame.

[Moxlotus]

Don't forget that Null Rod laughs at artifact lands.