This explosive loop relies on Devoted Druid's ability to constantly untap itself by placing -1/-1 counters on its own body, which would normally kill the creature. However, Vorinclex, Monstrous Raider and Lae'zel, Vlaakith's Champion completely rewrite the math of counter placement, ensuring that when you activate Leyline of Abundance's massive mana sink ability, your creatures are flooded with an overwhelming surplus of +1/+1 counters that instantly erase those detrimental drawbacks. With that protective engine established, you simply tap Devoted Druid for green mana, let Leyline of Abundance double your green production thanks to its passive mana-boosting trigger, and use the Druid's self-untap ability to generate an infinite mana and infinitely large creature loop.