Beat Engage
An engage triggered under Lúcio's Sound Barrier overhealth to nullify enemy burst damage during the approach.
Beat's overhealth is not HP but a decaying protective layer, so it is not ride it and then close — layering it on at the exact moment you close is everything. It works as a safety net when Rush/Dive has to force its way across open long-range sightlines, or when you are going in to break Suzu/Trance, and unlike a dry ult its biggest value is closing the distance with your damage ults still banked. Plenty of teams use Beat as the starting gun for the fight.
When the main tank has to close a long distance in a Rush/Dive comp. When you want to force out the enemy Suzu/Immortality. As the entry piece of a Wombo Combo.
Beat going out ahead of the engage, so it turns into a dry engage where you commit after the overhealth is already gone. Engaging while Lúcio is dead and Beat is not available.
Dive
High-mobility composition that bursts down enemy supports and disengages immediately.
Rush
Brawl composition that stacks close-range damage and sustain to overwhelm the enemy before they can respond.
Wombo Combo
Stacking multiple ultimates within one second to bypass defensive cooldowns and wipe the team.
Resource Trade
Spending a minor cooldown to force a major defensive one, netting an advantage for the real fight.