A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.
If a permanent has {X} in its mana cost, X is considered to be 0.
Karn's last ability can't get a face-down card in exile, even if you know it's an artifact card.
This printing is one of 3 catalogued treatments from PRM — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #72245 of *Magic Online Promos*, the promotional run that shipped alongside the May 2019 Magic Online release.
Card type: Legendary Planeswalker — Karn, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {4} (4 converted).
Legal in Modern, Legacy, Commander, Brawl, and Historic. Banned in Pioneer. Restricted in Vintage.
EDHrec ranks this card #1,960 in Commander, putting it in the common-include tier of the format's playable pool.
Illustrated by Naochika Morishita. Rarix catalogs 15 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Naochika Morishita
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
In a casual game, a card you choose from outside the game comes from your personal collection. In a tournament event, a card you choose from outside the game must come from your sideboard. You may look at your sideboard at any time.
Karn's first ability affects only artifacts on the battlefield. Activated abilities that work in other zones can still be activated.
Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities are activated abilities and will have colons in their reminder text, such as equip. Triggered abilities (starting with "when," "whenever," or "at") are unaffected by Karn.
