Kayle Reroll managed to survive the Mid Set update! Even though Yordle and Poppy*4 are gone, the comp is still going strong. Poppy receives a lot of compensation buffs and has the added bonus of always receiving a Radiant Stoneplate from Demacia, which is one of the best items you can receive in early mid game. Poppy*3 with items in early game is unkillable for most comps, allowing you to easily win streak once you have your power spikes.
Kayle always receives a Radiant Giant Slayer, which makes her a great tank buster and allows her to stay relevant throughout the game. The core concept of this comp is to hit an early Kayle*3 and Poppy*3 either by rolling in Stage 3-1 or slowrolling in Stage 3. Once you have them you can push towards Level 7 to add 7 Demacia for a power spike. Initially you can add units like Shen with Level 8, but you have lots of other options in late game.
If you don't have a Demacia Emblem you can cut down to 5 Demacia in late game to add units like Aatrox, Mordekaiser, K'Sante or Warwick to help you win the lobby, since Kayle will eventually fall off. This comp is great with Demacia Emblems on Mordekaiser/Aatrox or Slayer Emblem on Fiora.