Emeria Shepherd | Aftermath Analyst | Amulet of Vigor

(and one other card)

Lands you control can tap to produce at least ({3} magic symbol) ({G} magic symbol) .
You control a Plains.

Activate any number of lands by tapping them, adding at least ({3} magic symbol) ({G} magic symbol) .
Activate
Need for Speed by sacrificing a land.
Repeat step 2 until you control no lands.
Activate
Aftermath Analyst by paying ({3} magic symbol) ({G} magic symbol) and sacrificing it, returning all lands from your graveyard to the battlefield tapped.
When the lands enter,
Emeria Shepherd and
Amulet of Vigor trigger that many times.
Resolve all
Amulet of Vigor triggers, untapping each land that entered.
Resolve an
Emeria Shepherd trigger that was triggered by a Plains, returning
Aftermath Analyst from your graveyard to the battlefield.
Resolve all other
Emeria Shepherd triggers, returning any number of nonland permanents from your graveyard to either your hand or the battlefield.
Repeat.

You can return all nonland permanents in your graveyard to the battlefield if you control two or more Plains. To do this, have all triggers from
Emeria Shepherd target desired permanents. Then, resolve the Plains triggers first to return those cards to the battlefield, causing all other triggers to fizzle on the stack.