As for Koby, he forces you to trash a card from your hand to activate his KO effect, but he gets to KO a 3-cost or less Character, which makes it easier to remove bigger threats when combined with a cost reduction effect
I guess its because it gives me something to collect that isnt just your run-of-the-mill magic card
Emrakul, the Promised End Oh look, Emrakul made it onto the list anyway
Foggy Bottom Swamp Foggy Swamp Hunters Foggy Swamp Spirit Keeper Foggy Swamp Vinebender Foggy Swamp Visions Leatherhead, Swamp Stalker Leechridden Swamp Snow-Covered Swamp Sol'kanar the Swamp King Swamp Swamp Mosquito Swampbenders Swampsnare Trap
Main 60 cards (6 distinct) Lands - 22 Main 60 cards (6 distinct) Lands - 22 Simulating MTG Arena Best of 1 starting hand (Simplified, true algorithm in MTGA not revealed by Wizards yet) Add at least 100 different cards to your collection and set it as your Compare Collection on the manage page to see what cards from this deck you are missing