Missy + Skirk Alarmist + Thornbite Staff + Phyrexian Altar

Prerequisites

• You control another nontoken nonartifact creature.
• Thornbite Staff attached to Skirk Alarmist.

Steps

1. 1Activate Phyrexian Altar by sacrificing another nontoken nonartifact creature, adding one mana of any color.
2. 2When the creature dies, Missy's first ability and Skirk Alarmist trigger.
3. 3Resolve the Missy ability, returning the creature from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
4. 4Resolve the Skirk Alarmist trigger, untapping it.
5. 5Activate Skirk Alarmist by tapping it, turning the creature face up.
6. 6Repeat.

Effects

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