Cheapest priced copy (Strixhaven: School of Mages): $0.35 at Card Kingdom, near mint, their price list as of .
Master Symmetrist 
Creature — Rhino Druid · 4/4 · Uncommon · Strixhaven: School of Mages · #138
Reach
Whenever a creature you control with power equal to its toughness attacks, it gains trample until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Strixhaven: School of Mages | 138 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 16 April 2021Master Symmetrist’s triggered ability only looks at the power and toughness of a creature when it attacks. Once the ability has triggered, changing the creature’s power or toughness will not stop it from gaining trample or remove trample from it.