Valkyrie's Call + Simulacrum Synthesizer + Sarcatog

Valkyrie's Call

Simulacrum Synthesizer

Sarcatog

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 Sarcatog 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. Resolve the Sarcatog ability.
8. Repeat from step 3.

This clever loop relies on a continuous reincarnation cycle fueled by sacrificing and reanimating a high-mana-value Vehicle. Each time you loop the process, Simulacrum Synthesizer rewards your artifact entry by flooding the board with ever-growing Construct tokens. Meanwhile, Sarcatog acts as the necessary sacrifice outlet, feeding on the Vehicle while occasionally pumping its own power. Because Valkyrie's Call catches the nontoken Vehicle whenever it dies and drops it straight back onto the battlefield, the whole engine resets seamlessly, generating an endless stream of triggers and an infinitely massive Sarcatog.