History of Ursine Guard

Ursine Guard is the Exotic intrinsic perk of Ursa Furiosa. It increases movement speed while guarding with Sentinel Shield or Unbreakable; damage blocked by Sentinel Shield returns Super energy, while damage blocked by Unbreakable returns grenade energy. Bungie’s February 4, 2025 Update 8.2.0 explicitly changed the Unbreakable conversion to grenade energy.

Sources

• Bungie item definition — Ursa Furiosa — current perk description.
• Bungie, “Destiny 2 Update 8.2.0” — dated Unbreakable energy conversion change.
• Destinypedia — Ursa Furiosa — corroborates the perk’s earlier Sentinel Shield guard and Super-energy function.