it lasts indefinitely, until Ambassador Blorpityblorpboop either leaves the battlefield or its base power and toughness changes again from another effect (for example, a power and toughness sticker being placed on it or its ability triggering again)
Toski, Bearer of Secrets Some of the best card draw engines in Commander come from turning your creatures into saboteursthat is, giving you cards whenever they connect in combat
Similarly, any "as [this artifact] enters" or "[this artifact] enters with" abilities that the token has copied will also work
These include: First Edition cards (especially from the Base Set) Promo-only releases (e.g., Illustrator Pikachu) Secret Rares and Alternate Arts (like SAR cards in Japanese sets) Foil variants such as the Master Ball pattern introduced in Japans Pokmon Card 151 Low print runs, exclusive distributions, and region-locked editions all create scarcitymaking a card harder to find and therefore more desirable among collectors and investors
In such a situation it can be worthwhile to commit extra resources to setting up, even beyond what would seem reasonable, since one the lock is going there will be very little the opponent will be able to do to pull out the win