I have both the Hourglass and the Abacus, and the spreadsheet showed a very small dps increase using the Crusade card in place of either of those two. However, the increase was small enough that it's not worth it to me to seek out that trinket. If you don't have both of those, and don't feel like running BM or Mech to get them, I suppose it might be worth it to invest in the deck if you have money to burn.