Near-infinite creature ETBNear-infinite creature LTBNear-infinite magecraft triggersNear-infinite mana creatures you control can produceNear-infinite storm countPut all basic lands from your library onto the battlefield tapped
How it works
Activate the creature that taps for mana by tapping it, adding at least 1.
Cast the copy of Rampant Growth from exile by paying 1, unpreparing Studious First-Year.
When you cast that spell, Displacer Kitten triggers, blinking Studious First-Year, which enters prepared.
Resolve Rampant Growth, searching your library for a basic land and putting it onto the battlefield tapped.
When the land enters, Retreat to Coralhelm triggers, untapping the creature that taps for mana.