Sling of Courage is a Shop Relic. It grants 2 strength at the beginning of elite fights. Also works in the Dead Adventurer and The Colosseum (second fight only) events. It does nothing against bosses.
Trivia[]
This relic reference the tale of David and Goliath, in which the latter, usually regarded as gigantic man, was slain by the former, using only a stone and a sling.
The phrase David and Goliath has taken on a more popular meaning, usually denoting a situation where a smaller, weaker opponent faces a much bigger, stronger adversary.
Update History[]
Weekly Patch 46: Adrenaline
Preserved Insect and Sling should now work in all elite combats including elite battles from events (like dead adventurer event).
Weekly Patch 35: Aggregate
Sling Of Courage relic was incorrectly flashing in every room.