Lotus Ring + Puresteel Paladin + Nemata, Grove Guardian + Thousand-Year Elixir

Lotus Ring

Puresteel Paladin

Nemata, Grove Guardian

Thousand-Year Elixir

How it works

1. Activate Nemata's first ability by paying 2, creating a 1/1 Saproling creature token.
2. Activate Lotus Ring's equip ability by paying 0 due to Puresteel Paladin, attaching it to the Saproling.
3. Activate the Saproling by tapping and sacrificing it, adding .
4. Repeat.