6 Ionia Xayah (best with an emblem)




























With many buffs on Ionia units and on Vanquishers, this comp which was already strong during patch 13.18b is even stronger in patch 13.19.
Make sure to put Karma in front to sacrifice her so she doesn't waste any Ionian spirit forms on her (you'd prefer to have it on Xayah, Shen or Nilah).
4 Challengers



























This comp isn't nerfed or buffed and was dominant during patch 13.18b. We can see another Challenger domination during patch 13.19.
Make sure to pick 3 combat augment (augments that make your board directly stronger. E.g.: Gifts from the fallen, Tons of stats, Healing orbs, etc) to have success with this comp.
Slayer Reroll



























Reksai received a massive buff with an additional effect on her spell. With Reksai being already strong, we can expect Reksai reroll (most likely with Quinn as a side carry / enabler) to dominate the 3-cost meta.
Quinn will receive a radiant Deathblade form the Demacia trait so she'll also hit hard on units reksai can't reach immediately.
Samira reroll































Samira reroll is left untouched in patch 13.19 and she was already becoming quite trendy in patch 13.18b. This is a comp you want to reroll at lvl 5 to find Samira 3 in priority (Cassion 3 is a bonus but not mandatory). If during your slow roll you find Manyu Swain and Naafiri then make them 3 stars as well. If not then you should rush your levels to find 7 Noxus and Aatrox.
7 Noxus (best with an emblem)


























7 Noxus gives an insane amount of stats if you can have the 7 conqueror stacks (+35% on all Noxus buffs) and it's extremely difficult to kill any units on your board, however, this comp performs well only if you have an emblem so you can create a dual carry next to Mordekaiser.