Cheapest priced copy (Final Fantasy Commander): $0.79 at Card Kingdom, near mint, their price list as of .
Wrecking Ball Arm 
Legendary Artifact — Equipment · Rare · Final Fantasy Commander · #100
Equipped creature has base power and toughness 7/7 and can't be blocked by creatures with power 2 or less.
Equip legendary creature {3}
Equip {7}
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.79 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Final Fantasy Commander | 100 | Rare | $0.79 | $1.99 |
| Final Fantasy Commander | 128 | Rare | $1.99 | $2.99 |
3 rulings from Wizards of the Coast
- 6 June 2025Effects that modify the creature's power and/or toughness without setting base power and/or toughness will apply to the creature no matter when they started to take effect. The same is true for counters that change its power and/or toughness and effects that switch its power and toughness.
- 6 June 2025Wrecking Ball Arm overwrites all previous effects that set the creature's base power and toughness to specific values. Any power- or toughness-setting effects that start to apply afterward will overwrite this effect.
- 6 June 2025Once a creature equipped with Wrecking Ball Arm has been blocked, changing the blocking creature's power to 2 or less won't cause the creature to become unblocked.