Captain Storm, Cosmium Raider, Lesser Masticore, Ravenous Intruder, and Maskwood Nexus

Prerequisites

• Captain Storm, Cosmium Raider on the battlefield
• Lesser Masticore on the battlefield
• Ravenous Intruder on the battlefield
• Maskwood Nexus on the battlefield
• Lesser Masticore does not have a -1/-1 counter on it

Steps

1. Activate Ravenous Intruder by sacrificing Lesser Masticore
2. When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Lesser Masticore enters the battlefield, Captain Storm triggers, putting a +1/+1 counter on Lesser Masticore
4. Resolve the Ravenous Intruder ability
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinitely large Ravenous Intruder until end of turn