Cheapest priced copy (Portal Three Kingdoms): $44.99 at Card Kingdom, near mint, their price list as of .
Stone Catapult 
Creature — Human Soldier · 1/2 · Rare · Portal Three Kingdoms · #84
{T}: Destroy target tapped nonblack creature. Activate only during your turn, before attackers are declared.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Portal Three Kingdoms | 84 | Rare | $44.99 | — |
One ruling from Wizards of the Coast
- 20 September 2013If a turn has multiple combat phases, the ability can only be activated before the beginning of the declare attackers step of the first combat phase in that turn.