I love the fact that you can use the Coupon for Devil Room Items... Imagine making a deal with the Devil IRL and going "wait, I have a coupon for that!" :
tfw you apparently depleted the devil room item pool : r/bindingofisaac
Angel and Devil Rooms Combined! - Modding of Isaac
AlterTweaks - Devil's Reliquary - Modding of Isaac
The Binding of Isaac: the best mods to try before Repentance
Devil Room Item Pool Glitch? Getting Milk/Sad Onion : r/bindingofisaac
Updated Angel/Devil Room Items Tier List : r/bindingofisaac