Crippling Cloud

Crippling Cloud is an uncommon Silent skill that applies 4 Poison and 2 Weak to all enemies for 2 Energy, then Exhausts. This is one of the most powerful multi-target debuffing cards in the game — hitting every enemy simultaneously with Poison (damage over time) and Weak (25% damage reduction) in a single action. In multi-enemy fights, the combined effect can dramatically reduce incoming damage while building up lethal Poison.

Crippling Cloud is particularly excellent in Act 2 and Act 3 where group encounters are common. Applying 2 Weak to all enemies cuts 25% off every attack across the entire encounter, which adds up to enormous mitigation over several turns. The Exhaust keeps it from being spammable but ensures it triggers Exhaust-synergy relics. Upgraded, the Poison increases to 5 per enemy, further improving total Poison damage output. This card often single-handedly swings difficult group fights.