Delaying low cost Artifacts and Creatures typically means slowing down your opponents or removing wide boards of Tokens, which can net you an extra turn or two for setup
They're exiled at the end of the turn, but you get a leaving-the-graveyard trigger, an ETB trigger, and a leaves-play trigger
(Big Furry Monster, Right Side) Bad Ass Blacker Lotus Blast from the Past Bloodletter Booster Tutor Bosom Buddy Bronze Calendar Brushstroke Paintermage Bureaucracy Burning Cinder Fury of Crimson Chaos Fire Bursting Beebles Cardboard Carapace Cardpecker Carnivorous Death-Parrot Censorship Chaos Confetti Charm School Cheap Ass Cheatyface Checks and Balances Chicken Egg Chicken la King Circle of Protection: Art City of Ass Clam Session Clam-I-Am Clambassadors Clay Pigeon Collector Protector Common Courtesy Creature Guy Curse of the Fire Penguin Curse of the Fire Penguin Deadhead Deal Damage Denied
And because of the endless possibilities that the game and the community offer, as I said before, any card can sell
Creature - Human Wizard Color tag templates(None) Karrthus, Tyrant of Jund Flying, haste When Karrthus enters, gain control of all Dragons, then untap all Dragons
Thats less than my full-time job