Assassin
Low-HP, high-burst class built to dive backline targets and pick off carries.
Assassins trade almost all their durability for burst damage and mobility, relying on dashes, blinks, or stealth to reach the enemy backline and kill a squishy target before the rest of the team can respond. Ling, Karina, and Helcurt are classic examples — each built around a full-combo burst that can delete a marksman or mage in one engage. They're usually the jungler, since jungle clear speed and gank burst reward the same stats, but some flex into gold or mid lane as burst carries.