Buffs

Buffs allow you to upgrade a drones ability set. Related, but slightly different, are Weapons.

Buffs are stackable, and they last until you die.

Shield (Buff)
Shield creates a shield similar in height to the drone, but not full height, in front of the drone - it glances attacks that connect with it before they connect with the drone itself

(source: @Viotech3#8512 on KQB Discord)

Speed (Buff)
Speed : 20% buff to movement speed, as well as cooldowns.

Snail Speed by Map Without & With Speed Buff
(source: @drainy#1038 on Discord)