Karn generates threats over time, but more importantly its a source of card selection thats difficult to interact with
Do I need to cast only expensive spells to get counters
It turns out that in the years since Invasion , we'd learned somethingnot only weren't the tap lands too strong, they were actually a bit on the weak side
It has a passive ability that creates a 2/2 colorless Wizard Soldier creature token named Cadet any time you activate a loyalty ability
So far, we only know of three cards, Demonic Tutor, Opt, and Swords to Plowshares, so it seems like Opt at least will still be playable in Historic when the cards release next month, as befits a card already legal in standard
By venturing through the Lost of Mine of Phandelver, you are able to venture to the Dark Pool room which drains the opponent for one life rinse and repeat until the opponent has no more life