Cheapest priced copy (Marvel Super Heroes Commander): $0.79 at Card Kingdom, near mint, their price list as of .
Iconic Shield 
Artifact — Equipment · Uncommon · Marvel Super Heroes Commander · #520
Equipped creature gets +1/+2 and has "Whenever this creature attacks, another target attacking creature gains indestructible until end of turn." (Damage and effects that say "destroy" don't destroy it.)
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes Commander | 520 | Uncommon | $0.79 | — |