Activate the land with Dawn's Reflection attached by tapping it, adding at least 1.
Dawn's Reflection triggers, adding 2.
Activate Stone-Seeder Hierophant by tapping it, untapping the land.
Activate Drownyard Temple by paying 3, returning it from your graveyard to the battlefield tapped.
When Drownyard Temple enters the battlefield, Stone-Seeder Hierophant triggers, untapping Stone-Seeder Hierophant.
Activate Overgrown Estate by sacrificing Drownyard Temple, causing you to gain 3 life.
Repeat.
This clever setup transforms a modest mana-producing land into an engine of endless life and triggers. By enchanting that land with Dawn's Reflection, you generate a surplus of mana every time it taps, which funds Stone-Seeder Hierophant's ability to constantly untap the land for the loop. Meanwhile, Overgrown Estate gives you a reliable outlet to sacrifice that same land—which happens to be Drownyard Temple—allowing its unique recursion ability to bring it right back to the battlefield and restart the cycle.