Cheapest priced copy (Guildpact): $0.49 at Card Kingdom, near mint, their price list as of .
Petrified Wood-Kin 
Creature — Elemental Warrior · 3/3 · Rare · Guildpact · #91
This spell can't be countered.
Bloodthirst X (This creature enters with X +1/+1 counters on it, where X is the damage dealt to your opponents this turn.)
Protection from instants
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Guildpact | 91 | Rare | $0.49 | $0.79 |
2 rulings from Wizards of the Coast
- 1 February 2006Protection from instants works only while Petrified Wood-Kin is on the battlefield. It can be targeted by instant spells or abilities of instant cards while it's on the stack or in any other zone but on the battlefield.
- 1 February 2006"Protection from instants" means instant spells can't target it, damage that would be dealt to it by instant sources is prevented, and it can't be the target of abilities of instants (such as Haunt).