This means that a Karn deck doesn't need to concern itself with including many creatures to attack or block with, as it can be used to turn anything from an Unwinding Clock to a Darksteel Forge into an offensive or defensive body on the board
When you run out of cards that do what you want, look around the internet and see if anyone else has built a similar deck
#1 Marwyn, the Nurturer Commander: Kaldheim, Rare From Dominaria comes Marwyn, the Nurturer, a three-mana Elf Druid with some powerful abilities
Alot of promo cards have no current listings, so TCG Player and other sites have no market data
If that creature's power is 4 or greater, draw a card
Kismet Long before the era of Thalia, Heretic Cathar, Blind Obedience, Authority of the Consuls, and even Root Maze, there was Kismet