Effect
Auto attacks by 
Assassins, 
Duelists, and 
Warriors gain 100 Crit.
Where it sits
- No trigger and no quest: it works from the moment you own it.
- Its effect names the Assassin class: in a guild without one that part does nothing, and 4 of the 25 heroes start there.
Where it drops
- Auction House (Legendary Relics)
Other Legendary relics
Questions people ask
What does Martial Energy Crystal do in Guildrun?
Auto attacks by Assassins, Duelists, and Warriors gain 100 Crit.
What tier is Martial Energy Crystal in Guildrun?
Martial Energy Crystal is B tier on patch 0.5.12.
What is the difference between a relic and an item?
Items are equipped by a single hero and take up one of that hero's slots. Relics apply to the entire guild and do not use slots. That makes relics the stronger of the two when a build starts coming together.
How do I increase my team size?
Harmony Crystal raises it by one, up to five. So does each of the fifteen Mandate relics, but those require finishing an objective first, like dealing 15000 auto attack damage or applying 30000 shields. Pick the Mandate that matches what your team already does.
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