Random Only unit ideas

These units would be random only, that is you can only get it by chance and if you choose random. (if there are 10 units total then you have a 1/10 chance of picking it.)

Name: Mothership
Speed:low
health High
Power: low

The mothership is larger than other units so it is slightly easier to hit. It would be similar to thor.

Ability 1: Vortex: sucks in units temporarily until its finished (like the real vortex)
Ability 2: Cloaking field: Cloaks allied units that are near you.
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Name: Corruptor
Speed:Medium
health Medium
Power: Medium

Ability 1: Corrupt: Affected unit takes extra damage for X seconds
Ability 2: Morph to Broodlord (takes x seconds to morph and cannot morph back. you respawn as corruptor when you die however)

Broodlord
Speed: Low
Health: Medium
Power: Medium

Ability 1: Broodlings: Throws a ball that spawns 2 temporary broodlings on impact.
Ability 2: Flight: While active broodlord can only be hit by lobbed balls.
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Raven

Speed: Medium
Health: Medium
Power: Low

Ability 1: Auto-Turret- Summons a turret that deals low damage and only attacks within it's range. Does not deal killing blows.
Ability 2: Point defense drone: Summons a point defense drone that stops balls thrown by opponents (that enter its range) does not affect lobbed balls