press 4 to kill everyone

(Left to Right) GE is high priority
stamina mastery if you need to chase or evade more

Can't go wrong with these.

Left-To-Right in terms of preference

McGinnis ult, when used correctly, can stop any teamfight in its tracks
But you need to engage from a safe angle, and you need to have a good sightline to their escape route
Pull that off, and watch your teammates, and you'll kill confirm almost everybody you ultimate- even the big tanks.

Useful but impractical compared to items chosen for the build imo