Deal 7% more damage to low health champions. Gain AD/AP after kills or assists.
Aery's reliable and repeatable damage proc allows you to continuously deal chip/poke damage in extended fight where you're able to auto-attack and cast your abilities multiple times.
Because MF is a caster AD Carry, the mana sustain here allows you to poke throughout lane with [Q].
Celerity's bonus Movement Speed synergizes well with Miss Fortune's natural Movement Speed from [W]. The secondary effect of Celerity also allows MF to gain a considerable amount of bonus AD when her [W] is active.
Gathering Storm's massive late game Attack Damage synergizes incredibly well with MF's high base AD ability kit.
Bloodline's base Life Steal synergizes well with MF's passive, allowing you to keep yourself healthy and sustain in lane.
WhyCoup De Grace
Coup De Grace synergizes incredibly well with MF's massively high damage [Q] and [R], putting any squishy target with poor positioning in easy kill range.