The loot the objective runs on.
A tax on their attention
Nearly invisible in flight, it attaches to the first wall it reaches and becomes an emplacement whose hitscan nobody can dodge. Rocks are cover, it crawls along its wall toward anyone in reach, and their own fire is what kills it.
Finds them, then sends the swarm
Flies dead straight the way you threw it and bounces off their walls, scanning a disc wider than the last each time. Anyone it catches gets a swarm of Sweeper Drones locked on, and it keeps going until they shoot it down.
A world full of small problems
Bursts into a ring of small craft that fly straight out and bounce off their walls, each one diving onto the first ship it sees and spending itself on a hit that slows it. A ship at full speed can outrun one until it gives up, but a hit or two and the rest catch up. One bullet kills any of them, but ignored, they are still out there, waiting for whoever flies by.
The heavy weapon
Announces itself the moment it arrives — a red warhead, a ring at its true blast radius and a countdown — and everything inside when it goes dies. It brakes as it flies, so the charge is the aim: a tap goes off at their gate, a full hold deep in their world.
Takes their hands, not their ships
The nuke's flight, fuse and blast in electric blue, with a different payload: nothing dies, but every player inside is Scrambled — left and right swapped, every ability refused. It is not damage, so nothing mitigates it.
The heaviest thing you can send
The tankiest hull in the game, flying a route of its own choosing through their world for a minute and shooting every ship in range the whole way. It cannot be baited, taunted or kited, and killing it pays them nothing.