Although you may have a lot of possibilities to get the ownership of ten blessings in Endless mode, there is also a good chance with the Queen of Scales encounter in Story mode (deck 10) to get this. Maximize your encounter and equipment cards for gold and blessings' revenues so that you will receive about 300 gold. This is straightforward with the Plunderer's Cap because there is a gold or equipment (to be sold) winning chance for every second encounter card. For the blessings, play with "Devil's Carnival", "The Altar", "The Tavern", "Helpful Priest" (rations required) and "Holy Patronage" (40 gold required). If already unlocked, those encounters can still give you five blessings plus the one that is assigned to your character at the beginning. The "Call of the Priest" card is also a part of deck 10; the other four blessings can be bought there for around 300 gold by visiting him twice.