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Impassable augment icon

GoldGold augment

Impassable

Gain the Aftershock and Glacial Augment Keystone Runes. Aftershock: After Immobilizing an enemy champion, gain defenses and later deal a burst of magic damage around you. Glacial Augment: Immobilizing an enemy champion will spawn 3 glacial rays that Slow nearby enemies and reduce their damage to your allies.
Tier
C
Rank
#162
Rarity
Gold
Offered in
All picks
Patch
26.21

How Impassable plays

Impassable is C tier over all champions on patch 26.21: #162 of 226 augments and #62 of the 90 gold cards. That is the average over every champion; on the right one it is worth more, on the wrong one much less.

It gives ally heals and shields, so it pays off on champions that already use that. On a champion that doesn't, it is a wasted pick, whatever its tier.

It does best on Rammus, Rek'Sai and Vi. 8 of its 15 best champions are tanks.

It gets better later: C tier as a first pick and B tier by the fourth pick, when the game runs long enough for it to pay off.

The card it pairs with best is It's Critical: if you already have one of the two, the other jumps up your list.

Impassable tier by pick

ARAMKit ranks every card for each of the four picks of a game separately. The rank is its place among the cards offered in that pick.
PickTierRank in that pick
First pickTier C#178
Second pickTier B#161
Third pickTier B#125
Fourth pickTier B#133

Best champions for Impassable

The champions Impassable does best on, best first, with its tier on each and the champion's own Mayhem tier. Tiers only: no win rates for augments, as Riot's policy asks.
#ChampionRoleImpassable on itChampion tier
1Rammus iconRammusTankTier STier C
2Rek'Sai iconRek'SaiFighterTier STier B
3Vi iconViFighterTier STier B
4Briar iconBriarFighterTier ATier B
5Ornn iconOrnnTankTier ATier C
6K'Sante iconK'SanteTankTier ATier D
7Aatrox iconAatroxFighterTier ATier C
8Amumu iconAmumuTankTier ATier B
9Shaco iconShacoAssassinTier ATier B
10Nautilus iconNautilusTankTier ATier B
11Galio iconGalioTankTier ATier A
12Blitzcrank iconBlitzcrankTankTier ATier C
13Sett iconSettFighterTier ATier A
14Rakan iconRakanSupportTier ATier C
15Malphite iconMalphiteTankTier ATier B
16Braum iconBraumTankTier ATier C
17Sejuani iconSejuaniTankTier ATier B
18Pantheon iconPantheonFighterTier ATier B
19Zaahen iconZaahenFighterTier ATier S
20Riven iconRivenFighterTier ATier B

Also good on Maokai, Gnar, Alistar, Jarvan IV, Leona, Rell, Pyke, Renata Glasc, Poppy, Thresh, Mordekaiser, Zac, Fiddlesticks, Camille, Cho'Gath, Yone, Taric, Nunu & Willump, Shen, Lissandra, Udyr, Neeko, Darius, Wukong, Singed, Zyra, Warwick, Bel'Veth, Sion, Qiyana, Zilean, Annie, Skarner, Seraphine, Renekton, Gragas, Elise, Anivia, Janna, Mel, Sylas, Taliyah, Jax, Morgana, Yasuo, Hwei, Swain, Brand, Ahri, Aurelion Sol, Volibear, Nami, Vex, Heimerdinger, Lux, Xin Zhao, Veigar, Zoe, Lulu, Bard, Milio, Tahm Kench, Ivern and Twisted Fate.

Cards that pair with Impassable

The cards that do best next to it in the same game, best first.
  1. 1It's CriticalTier B
  2. 2Armored ImpactTier S
  3. 3PorcupineTier B
  4. 4Protein ShakeTier A
  5. 5Forged By The MasterTier A
  6. 6VulnerabilityTier B
  7. 7Tank It Or Leave ItTier A
  8. 8FlashyTier B

Items to buy with Impassable

The items that do best in games with this card, best first, over all champions. Check your champion's build page for its own items.
  1. Yun Tal Wildarrows1. Yun Tal Wildarrows
  2. Imperial Mandate2. Imperial Mandate
  3. Phantom Dancer3. Phantom Dancer
  4. Dead Man's Plate4. Dead Man's Plate
  5. Berserker's Greaves5. Berserker's Greaves
  6. Bandlepipes6. Bandlepipes

Questions and answers

What does Impassable do in ARAM Mayhem?

Gain the Aftershock and Glacial Augment Keystone Runes. Aftershock: After Immobilizing an enemy champion, gain defenses and later deal a burst of magic damage around you. Glacial Augment: Immobilizing an enemy champion will spawn 3 glacial rays that Slow nearby enemies and reduce their damage to your allies.

Is Impassable good in ARAM Mayhem?

On patch 26.21 Impassable is C tier over all champions (#162). It is at its best on Rammus, Rek'Sai and Vi.

Which champions is Impassable best on?

Best first: Rammus, Rek'Sai, Vi, Briar, Ornn, K'Sante, Aatrox and Amumu. The full list with each champion's tier is on this page.

What pairs well with Impassable?

It's Critical, Armored Impact and Porcupine, best first.

Pick your cards with the tiers next to you

LazyElo is a free Windows app that sits next to the League client. In ARAM Mayhem it shows the strongest champion on your bench, and in game you type the three cards you're offered to see their tier for your champion and what each one does.

Related

Source: ARAMKit, used with permission. Patch 26.21, 23,177,263 ARAM Mayhem games, data of October 28, 2026. Riot keeps Mayhem games out of its public match API, so these aggregates come from ARAMKit. Card tiers are shown without win rates, as Riot's developer policy asks.