Execution Order Talent 
 Warhammer 40k: Darktide 

Periodically mark Elites, Specialists and Bosses for Mercy Sanction. Killing a marked enemy replenishes 15% Toughness.

Your Cyber-Mastiff gains +150% Cyber-Mastiff Damage for 8s after attacking a marked enemy. You gain +15% Damage and +10% Attack Speed for 8s after killing a Marked Enemy.