Cheapest priced copy (Dissension): $0.35 at Card Kingdom, near mint, their price list as of .
Squealing Devil 
Creature — Devil · 2/1 · Uncommon · Dissension · #72
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
When this creature enters, you may pay {X}. If you do, target creature gets +X/+0 until end of turn.
When this creature enters, sacrifice it unless {B} was spent to cast it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dissension | 72 | Uncommon | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 1 May 2006You choose the value of X as Squealing Devil's ability resolves. X can be 0.
- 1 May 2006For this creature to not be sacrificed, {B} must have been spent on the {1}{R} mana cost. It doesn't matter if {B} is spent on {X}.
- 1 May 2006If this enters in a way other than announcing it as a spell, then the appropriate mana can't have been paid, and you'll have to sacrifice it.