Dark Star
6 units
Tiers
2Dark Stars create a black hole that consumes enemies at 8% max health.
4AND they gain 45% 
.
6AND the strongest Dark Star unit goes supermassive, gaining 70% effectiveness from Dark Star, and creates 2 minor Black Holes.
9All Dark Stars are supermassive. At level 10, CONSUME EVERYONE.
Best comps for Dark Star based on trait synergies
The deepest trait stacks per team size (Optimal Tall scoring), recomputed each patch.
Level 9
Ezreal1 costTimebreaker · SniperTemporal Shot
Cho'Gath1 costDark Star · BrawlerAccretion
Lissandra1 costDark Star · Shepherd · ReplicatorDark Matter
Mordekaiser2 costDark Star · Conduit · VanguardIndestructible
Pantheon2 costTimebreaker · Brawler · ReplicatorAdvanced Defences
Kai'Sa3 costDark Star · RogueBullet Cluster
Karma4 costDark Star · VoyagerSingularity
Riven4 costTimebreaker · RogueTime Warp
Jhin5 costDark Star · Eradicator · SniperSpace Opera
Dark Star 6Dark Star6 carriers2 / 4 / 6 / 9Timebreaker 3Timebreaker5 carriers2 / 3 / 4Brawler 2Brawler8 carriers2 / 4 / 6Replicator 2Replicator5 carriers2 / 4Rogue 2Rogue6 carriers2 / 3 / 4 / 5Sniper 2Sniper5 carriers2 / 3 / 4Eradicator 1Eradicator1 carriers1
Level 10
Veigar1 costMeeple · ReplicatorMeepteor Shower
Cho'Gath1 costDark Star · BrawlerAccretion
Lissandra1 costDark Star · Shepherd · ReplicatorDark Matter
Gnar2 costMeeple · Brawler · SniperSlingshot Maneuver
Meepsie2 costMeeple · Shepherd · VoyagerMeep Impact
Mordekaiser2 costDark Star · Conduit · VanguardIndestructible
Illaoi3 costAnima · Vanguard · ShepherdTest of Spirit
Kai'Sa3 costDark Star · RogueBullet Cluster
Karma4 costDark Star · VoyagerSingularity
Jhin5 costDark Star · Eradicator · SniperSpace Opera
Dark Star 6Dark Star6 carriers2 / 4 / 6 / 9Meeple 3Meeple8 carriers3 / 5 / 7 / 10Shepherd 3Shepherd6 carriers3 / 5 / 7Brawler 2Brawler8 carriers2 / 4 / 6Replicator 2Replicator5 carriers2 / 4Sniper 2Sniper5 carriers2 / 3 / 4Vanguard 2Vanguard6 carriers2 / 4 / 6Voyager 2Voyager5 carriers2 / 3 / 4 / 5 / 6Eradicator 1Eradicator1 carriers1