Question: nekros how to use desecrate?
Answer: Press 3 to cast Desecrate. ... 
Desecrate projects an aura of 25 meters (at base range) around Nekros. ... 
All corpses within the aura will be consumed, one at a time, with a one-second delay between each one. ... 
Consuming a corpse gives you a 54% chance of getting another roll from that enemy's loot pool.