Ashnod the Uncaring, Commander's Sphere, Corridor Monitor, and Goblin Engineer

Prerequisites

• Ashnod the Uncaring on the battlefield
• Commander's Sphere on the battlefield
• Corridor Monitor on the battlefield
• Goblin Engineer on the battlefield
• Goblin Engineer does not have summoning sickness

Steps

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

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite sacrifice triggers