Hello, my name is Thobbern. I am a high plat player, i have mained every single role and my brain is now very beeg, currently a mid main and i dont really play tahm kench. But have fun with this build, pls dont kidnap kids with this.

For mythics i personally prefer battlesong, which gives 25% ms over 1.5 sec, it also gives quite a bit of ability haste for the build which is good to devour more often. However this will make you quite squishy in comparison to chemtank.

Turbo chemtank is the safer option, you will not be able to use this to after devouring since it is only towards enemies. However it is much easier to catch someone to begin with since it slows your target by 50%. The big downside to this is that it counts as an ability for phaserush, meaning that you will procc phase rush a little before being able to devour.

Ludens is an interesting possibility since it gives you a 15% ms for 2 seconds when dealing damage with an ability. Devour does not deal damage before after spitting out the enemy. However it synergizes well with AA->AA->Q->R since Q proccs ludens then you can run.

Everfrost, root under tower? lol. No, but actually this might be quite viable since tahm kench scales quite well with ap. Haven't tested it yet tho, but i now blitzcranks sometimes takes this mythic.

Phase rush gives movespeed and slow resistance with 3 attacks, meaning it will procc with 3 autos or 2 autos and a Q. If you instantly devour the target after your third attack you will have 30-60% movement speed and 75% slow resistance for 4 seconds. This means that the self slow which is applied when you eat enemies will be significantly lowered. Phase rush has an amazing synergy with devour!

Nimbus cloak works well with both smite and ghost when kidnapping, use them as soon as you devour the target.

Celerity scales well with all the movementspeed we will build in items

Waterwalking will give a slight movespeed boost in the river. Gathering storm would be better overall, but here we are maximizing the kidnapping.

We choose domination as our secondary rune path due to the access of ultimate hunter.
Ultimate hunter, when fully stacked gives a 25% ultimate cooldown reduction. This will enable us to kidnap quite alot more throughout a game.

For the second domination rune there aren't that many good options so we go for zombie ward, because we play support meaning we get sweeper and control wards and destroy wards. Not only that but zombie ward can give up to a total of 30 AP after 10 wards destroyed. Ghost poro could also be an option.

For the rune stats it depends alot on the matchup. You go double armor if you are up against an Adc+Tank or Adc+Enchanter. However if you are up against supports like brand or zyra, taking 8 mr might be the better option. You could opt for the 8 ability haste just to get a lower ult cooldown, however having 10% attackspeed will most likely be more useful to stack your passive a little faster