Cheapest priced copy (Reality Fracture): $0.69 at Card Kingdom, near mint, their price list as of .
Guiding Hydra 
Creature — Hydra Horror · 1/0 · Rare · Reality Fracture · #360
This creature enters with X +1/+1 counters on it.
At the beginning of combat on your turn, you may remove a +1/+1 counter from this creature. If you do, put a +1/+1 counter on each other creature you control.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $0.49 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Reality Fracture | 11 | Rare | $0.69 | $0.49 |
| Reality Fracture | 360 | Rare | $0.99 | $3.49 |
| PFRA | 11p | Rare | $0.79 | $0.99 |