Orichalcum
Orichalcum is a common relic that grants 6 Block at the end of your turn if you have no Block remaining. This bonus triggers automatically at the end of each turn, but only if your Block is at exactly zero — if you have even 1 Block remaining from cards played that turn, the relic does not trigger.
The relic is deceptively strong for aggressive or attack-heavy builds that rarely play defensive cards. If you primarily attack each turn and let your Block fall to zero, Orichalcum reliably provides 6 free Block to absorb the next hit. It is less useful in dedicated block builds that maintain Block between turns, since those builds often have non-zero Block at turn end and never trigger the bonus. Orichalcum is best on Ironclad builds that lean into offense and don't have much inherent block generation, functioning as a passive defensive cushion.