🔒 Locks protect heroes in your collection from accidental use in the upgrade/ascension and resonance windows.

You can place a lock on any hero from your collection in the hero's profile. The game will also automatically lock heroes who are participating in various battle modes.

There are three types of locks that can be displayed in the upgrade/ascension and resonance windows:
🔒 Manual lock, which you have placed on the hero yourself;
🛡 Automatic lock, which indicates that the hero is part of the defense team in the Arena;
⚔️ Automatic lock, which indicates that the hero is participating in other battle modes.

The auto-select button in the upgrade window disregards heroes with locks. However, you can use any hero with a lock for improvement/ascension and resonance.
- When you click on the profile of a hero with a lock, a window will appear asking you to confirm your selection of this hero.
- After confirmation, the hero will appear in the list of resources for upgrade and then can be spent.