EDIT: Keeping this up as a good memory. Changed the title to include Budget since I very much was, so this deck favoured campaign cards for its rares.
Probably needs more removal and interaction. Is Banish a good enough catch-all in Expedition that I should use it to replace Slay? Inquiring minds want to know. Fearless Crescendo allows for some narrow 4 power answers, but it is also here because I am addicted to markets. This deck never needs double time influence, so it tries to get a single time from seats or Seek Power.
High density of Attachments is to help Tavrod pop off. Daggers are sufficient for both Copperhall Paladin and Auric Interrogator, and upgrade well on a Tavrod proc. Try not to think of Auric Interrogator as a turn 3 play: he is at his best when accruing you card advantage, and that requires either you have enough power to immediately equip him or hope he does not get removed.
Relic Weapons are pretty expensive, and I'm not sure there's enough support for them in expedition, so this deck no longer runs Xultan Arbalest.
Get to 5, stay alive, generate enough value with Tavrod to destroy opponent. That's all I've got.