Cheapest priced copy (Secrets of Strixhaven Commander): $2.29 at Card Kingdom, near mint, their price list as of .
Primordial Hydra 
Creature — Hydra · 0/0 · Mythic · Duels of the Planeswalkers 2013 Promos · #1
This creature enters with X +1/+1 counters on it.
At the beginning of your upkeep, double the number of +1/+1 counters on this creature.
This creature has trample as long as it has ten or more +1/+1 counters on it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
6 printings · $2.29 to $24.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 712 | Mythic | $3.99 | — |
| Magic 2012 | 189 | Mythic | $5.99 | $24.99 |
| Magic 2013 | 183 | Mythic | $5.49 | $19.99 |
| Duels of the Planeswalkers 2013 Promos | 1 | Mythic | $7.99 | — |
| Secret Lair Drop | 1330 | Mythic | — | $20.99 |
| Secrets of Strixhaven Commander | 284 | Mythic | $2.29 | — |
One ruling from Wizards of the Coast
- 22 September 2011Consider only the number of +1/+1 counters on Primordial Hydra when determining if it has trample, not its power and toughness. For example, a Primordial Hydra with six +1/+1 counters on it that's been the target of Titanic Growth (giving it +4/+4) would not have trample.