20 cards where the card is tagged “circle-of-protection”

Circle of Protection: Art (Unhinged #6)
Circle of Protection: Artifacts (Fifth Dawn #8)
Circle of Protection: Black (Ninth Edition #10)
Circle of Protection: Blue (Eighth Edition #11)
Circle of Protection: Green (Eighth Edition #12)
Circle of Protection: Red (Ninth Edition #11)
Circle of Protection: Shadow (Tempest #12)
Circle of Protection: White (Eighth Edition #14)
Circle of Solace (Onslaught #13)
Greater Realm of Preservation (Masters Edition #13)
Prismatic Circle (Mirage #34)
Rhystic Circle (Prophecy #19)
Rune of Protection: Artifacts (Urza's Saga #35)
Rune of Protection: Black (Urza's Saga #36)
Rune of Protection: Blue (Urza's Saga #37)
Rune of Protection: Green (Urza's Saga #38)
Rune of Protection: Lands (Urza's Saga #39)
Rune of Protection: Red (Urza's Saga #40)
Rune of Protection: White (Urza's Saga #41)
Story Circle (Tenth Edition #49)

It is the moment of discovery, the triumph of the mind, and the end of these results.