Exponential Growth (STX #130)
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Exponential Growth is a rare printing from Strixhaven: School of Mages (STX #130), a Sorcery. Illustrated by Izzy.
Card text
Until end of turn, double target creature's power X times.
Most Quandrix students fundamentally disagree with the concept of "enough."
Details
| Mana cost | {X}{X}{G}{G} |
|---|---|
| Type | Sorcery |
| Rarity | Rare |
| Set | Strixhaven: School of Mages (STX) |
| Collector number | 130 |
| Artist | Izzy |
| Released | 2021-04-23 |
Current price
As of 2026-10-19, Scryfall listed this printing at non-foil $0.53, foil $0.58 (USD). Prices change constantly, so check the live price before buying.
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Legality
| Standard | Not legal |
|---|---|
| Future Standard | Not legal |
| Historic | Legal |
| Timeless | Legal |
| Gladiator | Legal |
| Pioneer | Legal |
| Modern | Legal |
| Legacy | Legal |
| Pauper | Not legal |
| Vintage | Legal |
| Penny Dreadful | Legal |
| Commander | Legal |
| Oathbreaker | Legal |
| Standard Brawl | Not legal |
| Brawl | Legal |
| Competitive Brawl | Legal |
| Alchemy | Not legal |
| Pauper Commander | Not legal |
| Duel Commander | Legal |
| Old School | Not legal |
| Premodern | Not legal |
| PrEDH | Not legal |
| TLR | Legal |
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Rulings
- April 16, 2021 — 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)
- April 16, 2021 — 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.
- April 16, 2021 — 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.