Best with Sprykin emblem and lots of copies of Teemo early. Sacrifice a 3* unit (ideally Kobuko) to give Rek'Sai big stats. Can also tank Rammus 3 if very rich / high rolling. Kog'maw provides free Shred / Sunder.

Stage 2: Open with a win streak Teemo start and itemize him ASAP. The more Teemo casts, the more likely you can collect value off his mushrooms.

Stage 3: Level to 6 and roll for your 2* upgrades to stabilize and win streak Stage 3. Econ up and slow roll above 50g for 3*.

Stage 4: Finish Teemo 3* and your tank then push levels for more Sprykins. Cap the board with Gnar or another 5 cost.