Deck building is the best mechanism ever invented
Gloomhaven's item system creates a secondary equipment economy that runs parallel to the ability card game. Items provide reliable effects that ability cards cannot provide. A healing potion is reliable emergency life recovery. Boots of striding provide movement enhancement. Cloaking Device provides a repositioning tool independent of any specific ability card.
The gold economy that feeds item purchasing creates a secondary objective in every scenario. Pure combat efficiency sometimes ignores gold collection in favor of speed. Item-focused play collects coins while fighting rather than rushing to the exit. Understanding your class's item needs shapes how you prioritize scenario completion.
For new Gloomhaven players: buy a healing potion and a stamina potion before your first difficult scenario. These two items extend your effective hand size by giving you additional turns of resource before you must rest. The investment pays off immediately.