What tier is Rival Kog'Maw Slow 7 on TFT Set 18?

Rival Kog'Maw Slow 7 is currently Tier HM on TFT Set 18, with a 4.39 average placement and 52% top 4 rate over 199 real ranked games analyzed.

TFT Set 18

Rival Kog'Maw Slow 7▲ 0.76

Level 8

Placement

4.39

Top 4

52%

Contest.

This comp was Tier A in a previous refresh (last seen Sep 22), but doesn't get enough recent games to stay actively ranked this cycle. Kept here for reference.

Full composition

Game Plan

Each step's detail is currently only generated in French.

Se poser au niveau 7 pour rerolls Rengar, Master Yi

Niveau qui minimise l'or nécessaire pour 3-coût(s) en même temps. Compter environ 146-206 or pour une chance de 25% à 75% d'obtenir toutes les copies visées (médiane ~172 or).

These numbers assume a solo player with no contest from other players in the lobby. Real contest on these champions can make these estimates optimistic.

Traits

Adaptor 3/4

Blossom 3/5

Primal 2/4

Juggernaut 2/4

Brawler 2/4

Rival 1/2

Caustic 1

Invoker 1/2

Riftbeast 1/3

Summoner 1/2

Item combos — main carries (top 10)

Kog'Maw

Combo	Avg placement
	3.56
	2.75
	4.00
	3.33
	1.00

Rengar

Combo	Avg placement
	3.50
	2.00
	6.33
	5.00
	1.67

Master Yi

Combo	Avg placement
	4.10
	5.07
	4.00
	3.75
	2.33
	2.00
	2.00
	6.00
	3.50
	2.00

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Matchups vs

vs Caustic Nidalee 12 encounters 67%

vs Caustic Aphelios 11 encounters 73%

vs Juggernaut Zyra 11 encounters 82%

vs Emerald Morgana 10 encounters 30%

vs FloraFatalis Kha'Zix 9 encounters 67%

vs FloraFatalis Azir 9 encounters 56%

vs Emerald Ahri 9 encounters 89%

vs Greenfather Amumu 8 encounters 50%

vs Spellweaver Veigar 7 encounters 71%

vs Greenfather Sentinel 7 encounters 86%

vs FloraFatalis Zyra 7 encounters 57%

vs Greenfather Ezreal 6 encounters 67%

vs Elderwood Ezreal 6 encounters 33%

vs Solar Akali 6 encounters 83%

vs Summoner Zyra 6 encounters 67%

vs Riftbeast Pebbles 6 encounters 33%

vs Blossom Ahri 5 encounters 60%

vs FloraFatalis Soraka 5 encounters 80%

vs Juggernaut Sivir 5 encounters 20%

vs Greenfather Morgana 5 encounters 60%

Board variants

Baseline

3.08 avg placement

→

5.39 avg placement

→

4.93 avg placement

Real versions of this comp's final board: which exact group of champions shows up together, how often, and the average placement of those games. Not a game-by-game history (Riot only exposes the end-of-game board, never how it got there): a comparison of builds, not a timeline.

Board add-ons (9th/10th unit)

Base board — 8 units 3.08 avg placement · 52 games

+1 unit (9 total)

Gnar 4.50 avg placement · 2 games

Sivir 3.00 avg placement · 2 games

The main board above stops at 9 units: reaching a 10th slot needs level 10, which on its own already correlates strongly with a good placement. Below, the average placement of games with this base board plus one or two extra units, shown as a correlation to interpret, not a causal recommendation.

Augment path

Data unavailable. Riot's API doesn't populate the augments field for this set — verified directly on the collected sample (the "augments" field doesn't even appear in the response, across 23,000+ real participants checked). The field does exist in the official schema and worked on older sets, so this probably isn't permanent — this section will activate automatically as soon as it fills in again.