You control at least five lands and two additional creatures.
Stone-Seeder Hierophant does not have summoning sickness.
({1} magic symbol) available.
Steps
Activate Perilous Forays by paying ({1} magic symbol) and sacrificing any non-Scute Swarm creature, searching your library for a land with a basic land type and putting it onto the battlefield tapped.
Stone-Seeder Hierophant and each Scute Swarm trigger.
Resolve each Scute Swarm trigger, creating a token copy of Scute Swarm for each Scute Swarm you controlled.
Activate Stone-Seeder Hierophant by tapping it, untapping a land.
Activate that land by tapping it to add ({1} magic symbol) .
Resolve Stone-Seeder Hierophant's trigger, untapping it.
Repeat one additional time.
Repeat until there are no more lands you can search for, except in step 1 you may now sacrifice Scute Swarm creatures.
You may activate Stone-Seeder Hierophant any number of times.
Results
Near-infinite creature tokens.
Near-infinite landfall triggers.
Near-infinite mana lands you control can produce.
Put all lands with a basic land type from your library onto the battlefield.