Valkyrie's Call + Simulacrum Synthesizer + Ashnod's Altar

Valkyrie's Call

Simulacrum Synthesizer

Ashnod's Altar

How it works

1. Cast the Vehicle by paying its mana cost.
2. When the Vehicle enters the battlefield, Simulacrum Synthesizer triggers, creating a 0/0 Construct artifact creature token that gets +1/+1 for each artifact you control.
3. Activate the Vehicle's crew ability by tapping the Construct, causing the Vehicle to become an artifact creature until end of turn.
4. Activate Ashnod's Altar by sacrificing the Vehicle.
5. 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.
6. When the Vehicle enters the battlefield, Simulacrum Synthesizer triggers, creating a 0/0 Construct artifact creature token that gets +1/+1 for each artifact you control.
7. Repeat from step 3.

This loop revolves around a continuous cycle of sacrifice, rebirth, and artifact creation, turning a single vehicle into an endless engine. Ashnod's Altar provides the sacrifice outlet that fuels the process while generating colorless mana, which sends the vehicle to the graveyard. From there, Valkyrie's Call immediately steps in to return the fallen vehicle straight to the battlefield, bypassing normal destruction. Every time that vehicle re-enters, Simulacrum Synthesizer triggers to churn out an expanding army of Construct artifact creature tokens, letting you repeatedly tap those tokens to crew the vehicle and start the cycle all over again.