Cheapest priced copy (Legions): $0.49 at Card Kingdom, near mint, their price list as of .
Unstable Hulk 
Creature — Goblin Mutant · 2/2 · Rare · Legions · #115
Morph {3}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When this creature is turned face up, it gets +6/+6 and gains trample until end of turn. You skip your next turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.49 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Legions | 115 | Rare | $0.49 | $4.49 |
One ruling from Wizards of the Coast
- 4 October 2004The trigger occurs when you use the Morph ability to turn the card face up, or when an effect turns it face up. It will not trigger on being revealed or on leaving the battlefield.