The phrase
"damage buff" refers to a temporary increase in the amount of damage a character or weapon can deal in a video game or role-playing game.
Full definition
Just kill NPC's and collect cystals for your
ingame damage buffs and gold to spend in the arena (Crucible) area.
A bunch of weapon types are getting
PvE damage buffs, and several perks (including Kill Clip and Dragonfly) are also getting buffed.
Maybe on boss fights like Fabricator and Malaphar, where you either get a
huge damage buff or the boss gets its armor reduced, but on dummy parsing I think top performances are at about 12k, which means less of course on regular boss fights.
This could be in the form of
a damage buff, speed boost, additional armour or even a combination of all three.
Mercy and Lucio may both be healers, but where one uses angel wings to quickly zip across large distances to provide focused health and
damage buffs, the other feels like it's been ripped straight from Jet Set Radio; skating around the map fluidly, utilising infectious grooves to keep players up on their feat.
Enemies are damage sponges (unless you've spent the requisite skill points to unlock your figurine's increased
damage buffs), and combat requires zero skill outside of button mashing.
In Destiny 1 you had
a damage buff or de-buff if you were a couple of levels above or below your opponent.
The spirit gauge that comes with this weapon fills with each attack, which the releases the spirit attack combo, which can give
a damage buff when dealing landed.
A handful of special grapple moves along with health, stamina, and
damage buffs can be purchased at any table in the game.
Each tile provides you with a certain type of move, be it HP recovery, strong attacks,
damage buffs, and so on.
Additionally, Stuffy Flower received
a damage buff so it's easier to get that final blow and utilize her passive ability.