Thresh is one of the best carry supports in League of Legends. He’s a support that punishes immobile champions, such as Senna, Aphelios, Lux, and Karma—all of which are champions that lack dashes. He can hook them on cooldown and force flashes or get a kill if the opposing champions have already used their flash.
As with all League champions, specific items are going to be more effective depending on the situation. But there are certain items that are effective on Thresh in all games. These core items are going to ensure that you have the best possible experience with this champion.
Aftershock: This is the best keystone to make you deceptively tanky. It allows you to safely engage onto enemies with your hook or flay and survive the encounter. The bonus armor and magic resistance will ensure you survive the trade and get away with a healthy amount of resources without getting blown up.
Font of Life: Due to the amount of crowd control in your kit, taking this rune is optimal to give some additional sustain to both your duo lane partner and your other teammates over the course of the game.
Bone Plating: This is a basic rune to grant you more tankiness early on and in the mid-game. You aren’t going to survive a lot as a melee support, especially early on.
Your goal is to hook enemies into you so having some extra damage reduction is always welcome. This scales well into the mid-game, giving you some extra effective health to the initial burst of enemies. It can be the difference between life and death as the game goes on.
Overgrowth: This rune is perfect on a melee support. The longer the game goes, the more health you’ll get. It is easy to stack; all you have to do is stick close to minions dying and you’ll get
Biscuit Delivery: This is a must-have rune for melee supports considering how easily you’ll get poked early on. It allows you to regain back some health and mana and stay in the laning phase for longer. Also, it will solve mana issues due to you spamming your hooks early on.
Cosmic Insight: This is a great rune to ensure that you can use your abilities and summoner spells more often. If you will feel the need to purchase a Gargoyle Stoneplate early on, however, get Perfect Timing to get a free stopwatch.
Bonuses: +10-percent cooldown reduction, +6 armor, +15-90 health
Starting items Steel Shoulderguards
Having the extra AD early on is crucial for you. Steel Shoulderguards grants you the AD you need for favorable trades and a great passive to help you sustain your AD using minions. This support item scales freely with the gold income generated by it. After earning 500 gold you’ll get better stats and the ability to place wards, which refill when you back.
During the farming phase, you’re going to take damage from enemy champions. Health potions heal back 150 health over 15 seconds and will give you extra time before having to recall.
Core items Mobility Boots
These are one of the best boot options for supports. They allow you to cover huge distances over a small period of time, which is perfect in this roam-heavy meta. Thanks to your W ability, you can help your jungler cover a lot of distance for an unexpected gank, or be in time to save your ally from a gank instead.
Zeke’s Convergence is the cheapest support item, and it’s easy to rush to increase you and your bottom laner’s power. You can make use of the effect quite often thanks to the low cooldown on your ultimate. The stats from the item are useful, granting your everything you’d need in armor, magic resist, and cooldown reduction—so get it as soon as possible.