These are relatively straightforward in terms of setup, and in the right deck wont require any additional deckbuilding beyond swapping out one card
Bitterblossom (Manacurves) Mana Value: 1B Rarity: Mythic Rare Type: Kindred Enchantment Faerie Card Text: At the beginning of your upkeep, you lose 1 life and create a 1/1 black Faerie Rogue creature token with Flying
Central Elevator is a room tutor and Promising Stairs is the actual wincon, though you'll need a supporting cast of just about every playable room in Magic right now, which also means you're probably playing a Marina Vendrell Commander deck
Red has absolutely no shortage of artifacts, generating treasure at a rapid rate, throwing down mana rocks, and playing useful artifact creatures like The Lost Caverns Hotfoot Gnome
If you're playing some sort of group slug strategy, this just tosses around extra damage, and it never backfires against you