Sin, Unending Cataclysm + Intruder Alarm + Phyrexian Altar + Kami of Whispered Hopes

Sin, Unending Cataclysm

Intruder Alarm

Phyrexian Altar

Kami of Whispered Hopes

How it works

1. Cast Sin either from your hand or command zone by paying 5 plus commander tax if applicable.
2. As Sin enters, remove all counters from all artifacts, enchantments and creatures you control, putting twice that many +1/+1 counters on Sin plus one due to Kami of Whispered Hopes.
3. When Sin enters, Intruder Alarm triggers, untapping all creatures.
4. Activate Phyrexian Altar by sacrificing Sin, adding G/U.
5. Choose to return Sin to the command zone from your graveyard.
6. When Sin dies, it triggers, putting its counters plus one +1/+1 counter on Kami of Whispered Hopes.
7. Activate Kami of Whispered Hopes by tapping it, adding an amount of or equal to its power.
8. Repeat.

This clever loop exploits the sheer multiplier potential of Kami of Whispered Hopes, turning the massive influx of counters from Sin, Unending Cataclysm into a towering stat boost that fuels infinite mana. Whenever Sin enters the battlefield and devours all your existing counters, Kami of Whispered Hopes adds an extra +1/+1 counter to the tally, ensuring your power grows with every single iteration. Sacrificing Sin to Phyrexian Altar generates the necessary mana to recast it, while the clever static ability of Intruder Alarm untaps your creatures on every entrance to keep the engine running smoothly. By choosing to return Sin to the command zone upon death, you can continuously replay your commander, funneling its escalating counters onto Kami of Whispered Hopes to unlock an infinite supply of colored mana and boundless enters-the-battlefield triggers.