Against a control deck full of sweepers (Day of Judgment, plus Pest Control out of the sideboard) and card advantage engines, Duress proactively strips their removal or counters like No More Lies before they can be deployed. Enduring Innocence gives you a lifelink body early, and if it dies to a board wipe it returns as an enchantment. In that form it is no longer a creature, so it can't attack and its lifelink does nothing, but it keeps drawing you a card (once each turn) whenever another creature with power 2 or less enters, which is a resilient card-advantage engine through their sweepers. Erode is weak here because it only hits creatures and planeswalkers, and they run very few of those (Thor, North Wind Avatar, Great Hall of the Biblioplex once animated, Monk tokens). It also hands them a basic land, so it is not worth holding a slot. Starscape Cleric dies to any sweeper and can't block, so trim it.