Empty Bottle

Strategy and Synergy
The artifact is good at what is does, but what it does isn't good. It can normally only be used in normal battles and not against bosses. Gaining 3 for a kill is a pretty high benefit. Especially when you kill the enemy with a high-cost spell.

Trivia
It's dangerous to go alone, take this! is a quote from the original Legend of Zelda video game.