Rest Sites, marked with a campfire icon, offer two primary actions: Rest (heal HP) or Upgrade (improve a card). Sometimes, unique options like 'Dig' (Ironclad) or 'Recall' (Watcher) are available. Deciding whether to heal or upgrade is a critical strategic choice. Generally, if your HP is high, upgrading a key card is more beneficial. If you're low on health and anticipate a tough fight, resting might be necessary. Prioritize upgrading cards that provide significant damage or defense scaling.
