And then some trigger would turn the game state to Night where all the Night effects would happen
If a creature is dealt damage equal to or greater than its toughness over the course of a single turn (whether it be combat damage, damage from spells or abilities, or a combination of both), that creature is destroyed, and it goes to its owners graveyard (or "dies")
There are only a handful of ways to remove specific cards from your opponents deck, most of which are known by the slang term capping or surgical-ing. These come from Jester's Cap and Surgical Extraction, though there are a few other cards that are similar
Beth Queen of Cardboard Beth is an casual Commander player who's passionate about silly decks, creating safe community spaces, and crowns
You will be spending all of your draw steps dredging, and as such your hand is going to be full of Stinkweed Imps and Golgari Thugs