The ShiftstonedEternal Power Calculator is a deck-building tool that visualizes your odds of drawing enough Influence and Power based specifically on the cards found in your deck.
Kind of. In longer games the first merchant gets the vault and the second gets the obelisk. I find that in situations where that setup doesn't tip the game in your favor, Wurm Bait probably doesn't make a difference either. When it comes to closing out the game, obelisk does so faster and also has some defensive use, so no competition there. Still a work in progress though and I haven't played with it too much, it might be worth a market spot after all. Probably over SSF if I would put it back in. That card is mostly there because I like it so much and isn't actually very good.