Warning: Do not sell an entire collection to a shop without removing the rares and expensive uncommons first
Defense of the Heart Enchantment At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice this enchantment, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle
Similarly, once Preacher of the Schism's last ability triggers, it doesn't matter what happens to players' life totals before the ability resolves
Judgment emphasizes Green and White, while deemphasizing Black
Raffine is strong enough to be top commander in cEDH tables, that should tell you about its power level
Search your library for a creature card with the same name as that creature, put it onto the battlefield tapped, then shuffle