COSMOSEA built a health preserver out of the indestructible steel he founded in the castles of the local multiverses. This is something we can bring with us. If you are in combat, and you are exhausted feeling like you can't fight, quickly enter the machine and the enemy can't touch you. Whilst the enemy tries to break through the glass door (unsuccessfully), your stamina and strength will rise back up and give you more potential.
