Slobad, Iron Goblin, Scarecrone, and Intruder Alarm

Prerequisites

• Slobad, Iron Goblin on the battlefield
• Scarecrone on the battlefield
• Intruder Alarm on the battlefield
• You control an artifact creature with mana value at least five
• Slobad and Scarecrone do not have summoning sickness

Steps

1. Activate Slobad by tapping it and sacrificing an artifact creature with mana value five or greater, adding at least that can only be spent to cast artifact spells or activate artifact abilities
2. Activate Scarecrone's last ability by paying and tapping it, returning the sacrificed creature from your graveyard to the battlefield
3. Intruder Alarm triggers, untapping all creatures
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite red mana that can only be spent to cast artifact spells or activate artifact abilities
• Infinite sacrifice triggers
• Infinite untap of all creatures