List of Grimoire Cards/Black Shield

""The Cabal are too structured, too disciplined. Let's show 'em what fun looks like."

ARENA DESIGNATION: Black Shield LOCATION: Firebase Thuria, Phobos

Codenamed "Black Shield," this decommissioned Firebase is believed to have been a key position used by the Cabal as they established their warbase on the surface of Mars. With the majority of their forces stationed planet side, Guardians have been able to claim Black Shield as a competitive training ground.

Both Shaxx and Commander Zavala have questioned the Cabal's strategy, believing that forfeiting such a strategic position may one day leave the Cabal, and Mars, open to a proper offensive."