Drafna, Founder of Lat-Nam, Intruder Alarm, Su-Chi Cave Guard, and Ashnod's Altar

Prerequisites

• Drafna, Founder of Lat-Nam on the battlefield
• Intruder Alarm on the battlefield
• Su-Chi Cave Guard in hand
• Ashnod's Altar on the battlefield
• Thornbite Staff attached to Drafna
• Drafna does not have summoning sickness
• available

Steps

1. Cast Su-Chi Cave Guard by paying
2. Holding priority, activate Drafna's second ability by paying and tapping it, copying the Su-Chi Cave Guard spell
3. Resolve the copy of the Su-Chi Cave Guard spell
4. When the Su-Chi Cave Guard token enters the battlefield, Intruder Alarm triggers, untapping all creatures
5. Activate Ashnod's Altar by sacrificing the Su-Chi Cave Guard token, adding
6. When the token Su-Chi Cave Guard dies, it triggers, adding eight
7. Repeat from step 2

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of all creatures