Cheapest priced copy (Zendikar Rising Promos): $0.49 at Card Kingdom, near mint, their price list as of .
Grakmaw, Skyclave Ravager 
Legendary Creature — Hydra Horror · 0/0 · Rare · Zendikar Rising Promos · #223p
Grakmaw enters with three +1/+1 counters on it.
Whenever another creature you control dies, if it had a +1/+1 counter on it, put a +1/+1 counter on Grakmaw.
When Grakmaw dies, create an X/X black and green Hydra creature token, where X is the number of +1/+1 counters on Grakmaw.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Zendikar Rising Promos | 223p | Rare | $0.49 | $0.79 |
| Zendikar Rising Promos | 223s | Rare | — | $1.99 |
| Zendikar Rising | 223 | Rare | $0.49 | $0.49 |
| Zendikar Rising | 366 | Rare | $0.99 | $0.79 |
2 rulings from Wizards of the Coast
- 25 September 2020If a creature with a +1/+1 counter on it dies after receiving too many -1/-1 counters, it dies at the same time that the counters are removed, and Grakmaw's second ability triggers. Similarly, if Grakmaw dies after receiving too many -1/-1 counters, use the number of +1/+1 counters it had prior to receiving the -1/-1 counters to determine the value of X.
- 25 September 2020Grakmaw's second ability puts just one +1/+1 counter on it, no matter how many counters the dying creature had.