Most Popular
If you want to use the most popular Tahm Kench Top build, you should take Flash and Teleport as your Summoner Spells. For runes, you should pick Grasp of the Undying as your keystone, followed by Shield Bash, Second Wind and Unflinching in the primary tree, as well as Legend: Alacrity and Triumph in the secondary tree. For rune shards, you want Attack Speed in offense, Health Scaling in flex and Health Scaling in defense, though it depends on the matchup. Finally, for your items, you should build Heartsteel as your first item, followed by Plated Steelcaps and Sunfire Aegis. For your last 3 items, you should build Thornmail, Unending Despair and finish with Jak'Sho, The Protean. For the skill order, you want to stick with Q - W - E. Right now, this build has 56.9% winrate over 425 matches played.
Situational Tahm Kench Runes and Items
Depending on the context of your game, your matchup, and enemy champions, you might want to consider building some situational items or take specific runes. Carefully examine your team, enemy team, game state , and your matchup to plan your Tahm Kench build accordingly! For example, when it comes to rune shards, you might want to take either Armor or Magic Resist, depending on which champion you are about to lane against.
Furthermore, if you want a more detailed breakdown, you should also check out Tahm Kench runes page.