Valkyrie's Call | Simulacrum Synthesizer | Grinding Station

(and one other card)

Vehicle with MV >= 3 and a Crew Ability

You have enough mana to cast the Vehicle with MV >= 3.
The number of artifacts you control is equal to or greater than the Vehicle's crew number minus 2.

Cast the Vehicle by paying its mana cost.
When the Vehicle enters the battlefield,
Grinding Station and
Simulacrum Synthesizer trigger.
Resolve the
Grinding Station trigger, untapping it.
Resolve the
Simulacrum Synthesizer trigger, creating a 0/0 Construct artifact creature token that gets +1/+1 for each artifact you control.
When the Construct enters the battlefield,
Grinding Station triggers, untapping
Grinding Station.
Activate the Vehicle's crew ability by tapping the Construct, causing the Vehicle to become an artifact creature until end of turn.
Activate
Grinding Station by tapping it and sacrificing the Vehicle.
When the Vehicle dies,
Valkyrie's Call triggers, returning the Vehicle from your graveyard to the battlefield. It will not be an Angel because the Vehicle is no longer a creature and cannot gain creature types.
Repeat steps 2 through 5 one additional time.
Resolve the
Grinding Station ability from step 7.
Repeat from step 6.