This is a fun and surprisingly decent deck crammed full of sites - 12 of them! Your only units are the 9 merchants and
Vargo Redclaw in the market.
The main point is to get those
Svetya's Sanctums out, then keep playing those sites. If you can get two Sanctums out while having an Aegis, the game is basically won. Don't be afraid to play a site on top of an incomplete site, you'll usually have a few in your hand anyway and you barely even care about the units which pop out at the end.
Calderan Cradles are there to help make your spells more powerful and assist if you don't draw a sanctum, but they're honestly kind of weak here. I've been thinking of swapping them for
Strategize,
Royal Decree, or maybe
Defiance, and I'm sure there are a few other optimizations you could make here - I'd love to hear suggestions I've not considered.
Your main problem deck is anything super aggro (it's a crapshoot if you get your
Hailstorms and/or
Harsh Rules in time, and
End of the Story can just take too long to get out), but some combo decks can be a problem if they hit their jackpots.
If you're playing something midrange, it's best to swap out
Xo of the Endless Hoard a bunch for extra card draw, against Aggro
Vargo Redclaw is good to pull out but will usually get
Permafrosted if they have it.