Astral Dragon | Springheart Nantuko | Stone-Seeder Hierophant

Cards

All permanents on the battlefield (
Springheart Nantuko attached to
Astral Dragon and
Stone-Seeder Hierophant without summoning sickness).

You have a land card in hand.
You are able to play a land this turn.
You control a land that can tap to produce at least ({G} magic symbol) , or the land card in hand can tap to produce ({G} magic symbol) .

({1} magic symbol) if the land card in hand does not enter untapped and/or cannot produce mana available.

Play a land. When the land enters,
Springheart Nantuko and
Stone-Seeder Hierophant trigger.
Holding priority, if the land enters the battlefield untapped, activate it by tapping it, adding at least ({1} magic symbol) .
Resolve the
Stone-Seeder Hierophant trigger, untapping it.
Holding priority, activate
Stone-Seeder Hierophant by tapping it, untapping a land.
Activate the land by tapping it, adding at least ({G} magic symbol) .
Resolve the
Springheart Nantuko trigger, causing you to pay ({1} magic symbol) ({G} magic symbol) to create a token copy of
Astral Dragon.
When the
Astral Dragon token enters the battlefield, it triggers, creating two copies of a land you control that are 3/3 Dragon creatures in addition to their other types.
When the land tokens enter the battlefield,
Springheart Nantuko and
Stone-Seeder Hierophant trigger twice.
Repeat steps 3 through 5 two additional times for the
Stone-Seeder Hierophant triggers from step 8.
Resolve the first
Springheart Nantuko trigger, choosing not to pay and creating a 1/1 Insect creature token.
Repeat from step 6 with the second
Springheart Nantuko trigger.

This combo has been estimated to be Exhibition (Bracket 1+).