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 land with a basic land type and putting it onto the battlefield tapped.
Amulet of Vigor and each Scute Swarm trigger.
Resolve Amulet of Vigor's trigger, untapping that land.
Resolve each Scute Swarm's trigger, creating a token copy of Scute Swarm for each Scute Swarm you controlled.
Activate that land by tapping it, adding ({1} magic symbol) .
Repeat one additional time.
Repeat until there are no more lands you can search for, now sacrificing a Scute Swarm in step 1.
Results
Near-infinite creature tokens.
Near-infinite landfall triggers.
Put all lands with a basic land type from your library onto the battlefield tapped.