Rick Remender's Uncanny X-Force

Rick Remender's Uncanny X-Force (2010-2012) is a 35-issue masterpiece about a black-ops X-Men kill squad — Wolverine, Psylocke, Archangel, Fantomex, and Deadpool — who execute threats too dangerous for the X-Men to handle publicly. The run opens with the team deciding to assassinate a child reincarnation of Apocalypse and never lets go of that moral weight. Remender builds to the Dark Angel Saga, widely considered one of the greatest X-Men stories of the 21st century, then carries the consequences through a devastating final act. The entire run is a meditation on violence, moral compromise, and whether heroes can do terrible things and remain heroic.