welcome to this guide. to preface, I have hit diamond in 2016 and 2017 as a trundle support main. i've also been top 500 in overwatch for seasons 1,2, and 3, peaking at #121 in na as a tank main (does that matter? idk). this is my story. (law_and_order_svu.mp3)

what the hecc does support trundle even do? many of my lane mates have asked me that and i always respond with "muted !"

in all seriousness, trundle support is great at 2 things:

1) throwing a pillar on the enemy team that has a 46% slow (for reference, exhaust has a 40% slow) and a knock up

2) trundle is a very tanky champion, with lots of lane sustain due to his passive, and team fight sustain when you ult an enemy during a fight and use your frozen domain, which speeds you up and increases heals.

armed with these two strengths, how do you fulfill your role as a support?

trundle's bread and butter. the only reason trundle support exists.

There are 2 important parts to trundle's pillar - timing and placement

when would you pillar?
1) when trying to force a fight and you see the enemy in pillar range and can be knockback into your team
2) during a teamfight and you want to split the enemy team (hitting a pillar in the jungle can seal the fight in your favor)
3) when you see someone out of position and think you can kill someone with your teammate
4) when ganking
5) peeling (important) if your teammate is getting dived by an enemy, you can pillar inbetween the enemy and your teammate

pillar placement
you almost always want to hit the enemy with the pillar, otherwise you get no slow/knockup value (your slows lets teammates heal with your runes)

1) the most ideal pillar is dead center, knocking up the the enemy into your side, forcing them to either flash away or die
2) pillar the enemy next to a wall will force them to walk all the way from the wall side to the other end
3) right next to the enemy, forcing them to back off
4) peeling for your teammate, the pillar will usually slow an enemy enough for you to get away
5) in contested areas of the map eg tri-bush, dragon pit exit, any tight corners to block movement

there any many more times and places to use the pillar! you are rushing ability haste so feel free to spam it :D

trundle's w is one of the ways you can express your champion mastery on him. in general, think of the current situation and do any of the following apply?

1) are you running towards the enemy and trying to get in pillar range? (chasing)
2) are you running away from the enemy? (fleeing)
3) have you just ulted?
4) are you in danger of dying and think you can survive with a potion + minion sustain?
5) do you want to bluff the enemy into thinking your jungler is nearby?

throw down the frozen domain!

depending on the situation and how you feel, throw the frozen domain forward to chase, or backwards to run.

cool tip time!!
if you are being seiged at your tower (which happens often) and you want to bluff, use your frozen domain aggressively and run towards them with a pillar in tow. watch them scurry for nothing!

almost always use the autoattack > q > autoattack reset combo. you lose out on too much damage if you dont. dont forget it reduces enemy attack by 10 for 5 seconds so feel free to keep smacking someone early game (level 1-5).

the other time to use it (without the auto-attack reset) is if your teammate has a skill shot up and you want to help them hit it (chomp slows for 75% briefly)

easiest to use. dont ult until you are ready to all in or running away. ideally use on a tank, second best option is the person you have just pillar'd and want to all in. another good time to use is when you want to kill (ult + ignite does a lot)