Cactus Game Design Message Boards

Does it matter if Sychar is played as a Site or a Fortress in order to hold SWJ?

Nope. The identifier applies to both and there are no rules preventing Sites or Fortresses from holding Artifacts by default.

If I discard or reserve SWJ from Sychar, can I activate another copy of SWJ on Sychar in the same prep phase?

You cannot. You are limited to activating and/or deactivating only one copy of a given Artifact each turn. So you cannot use SWJ in Sychar and activate another one on Sychar, your Artifact pile, or even from your Deck with Delivered. Additionally, if you had Sychar active from last turn still and you choose to deactivate it, you cannot activate another copy later either by game rule or by ability (like Delivered).

Since Fortresses are unique and Sites are not, can I have two copies of Sychar with one as a Site and one as a Fortress at the same time?

That is correct. You could have both in play as Sites or one as a Site and one as a Fortress, assuming you're playing Type 2 so that you can have two in your deck. If you take two copies of Sychar from your opponent you could even have 3 in play as Sites and one as a Fortress.