Ashnod the Uncaring + Goblin Engineer + Corridor Monitor + Lotus Petal

Prerequisites

• Goblin Engineer does not have summoning sickness.

Steps

1. 1Activate Lotus Petal by tapping and sacrificing it, adding .
2. 2Activate Goblin Engineer by paying , tapping and sacrificing Corridor Monitor, targeting Lotus Petal.
3. 3Ashnod triggers, copying Goblin Engineer's ability, targeting Corridor Monitor.
4. 4Resolve the first Goblin Engineer ability, returning Corridor Monitor from your graveyard to the battlefield.
5. 5Corridor Monitor enters the battlefield, untapping Goblin Engineer.
6. 6Resolve the second Goblin Engineer ability, returning Commander Sphere from your graveyard to the battlefield.
7. 7Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers