Underrail Marty [upd] Review
For the uninitiated, LTI effectively reduces the cooldown of your abilities, allowing you to fire off high-impact skills much faster than intended. But the real "Marty" magic happens with Precognition (specifically when utilizing mechanics that allow for rerolls or preemptive strikes) and the infamous mechanics.
He will buy almost any weapons, armor, or ammunition you bring him. underrail marty