You control at least five lands and two additional creatures.
({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 basic land and putting it onto the battlefield tapped.
Each Scute Swarm triggers, creating a token copy of Scute Swarm for each Scute Swarm you controlled.
Activate Eartthcraft by tapping any Scute Swarm, untapping a basic land.
Activate that land by tapping it to add ({1} magic symbol) .
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 and search your library for any land with a basic land type.
You may activate Earthcraft any number of times.
Results
Near-infinite creature tokens.
Near-infinite landfall triggers.
Near-infinite mana basic lands on the battlefield or in library can produce.
Put all lands with a basic land type from your library onto the battlefield.