Exponential Growth doubles a creature’s power sequentially, not all at the same time. For example, if X is 3 and you target a 2/2 creature, you will double its power once to 4, again to 8, and a third time to 16, making it a 16/2 creature until end of turn.
If a creature’s power is less than 0 when it’s doubled, instead that creature gets -X/-0, where X is how much less than 0 its power is. For example, if an effect has given a 5/5 creature -7/-0 so that it’s a -2/5 creature, doubling its power makes it a -4/5 creature.
If an effect instructs you to “double” a creature’s power, that creature gets +X/+0, where X is its power as that effect begins to apply. (This is not the value of X you chose when you cast the spell)
Last observed at $0.66, stable around $0.66 thirty days ago. Over the trailing 90 days the price moved between $0.58 and $0.66 across 34 observations. Headline volatility reads stable. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
Last observed on Scryfall 45 minutes ago at $0.66.
This printing is one of 2 catalogued treatments from PSTX — the lineup includes Foil 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.
This card belongs to *Strixhaven: School of Mages Promos* (released April 2021).
Card #130s in Strixhaven: School of Mages Promos.
Rarity tier: rare. Rares occupy the bottom-of-pack rare slot in standard boosters.
Card type: Sorcery. Color identity: green. Mana cost: {X}{X}{G}{G} (2 converted). Keyword abilities: Double.
Legal in Pioneer, Modern, Legacy, Vintage, Commander, Brawl, and Historic.
EDHrec ranks this card #6,403 in Commander, putting it in the niche-pick tier of the format's playable pool.
Illustrated by Izzy. Rarix tracks 941 other cards credited to this artist across the catalog — browse the full gallery to see the body of work.
Search across TCGplayer, eBay sold, Cardmarket EU, and Star City from the marketplace deeplinks above to compare live listings.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Izzy
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
