mtg 2020 booster box Core Set Prerelease Primer and Commander Wizards of the Coast Magic

Karn, the Great Creator Legendary Planeswalker Karn Activated abilities of artifacts your opponents control can't be activated

Without some sort of answer to Avacyn however, your opponents will be facing down your indestructible board state

You get a discard outlet to get reanimation targets in the graveyard or tuck cards beneath Currency Converter

Some of those changes are more impactful than others

Keep her tapped, and that bottleneck stays in place

Ive watched videos and streams where players try to draw cards against her, Ive attempted it myself, and Ive had a Narset out when an opponent tried to draw cards at least 100 times in total