The Locust God + The Celestus + Aphetto Alchemist + Intruder Alarm

The Locust God

The Celestus

Aphetto Alchemist

Intruder Alarm

How it works

1. Activate all mana-producing creatures you control by tapping them, adding at least 4.
2. Activate The Celestus by paying 3 and tapping it, changing it from day to night or from night to day.
3. The Celestus triggers, causing you to gain 1 life and loot.
4. The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
5. The Insect enters the battlefield, triggering Intruder Alarm, untapping all creatures.
6. Activate Aphetto Alchemist by tapping it, untapping The Celestus.
7. Repeat.

This loop turns the perpetual day-night cycle of The Celestus into an engine for an entire swarm of winged insects. By paying to shift the time, you trigger The Celestus's passive looting ability, which in turn causes The Locust God to flood the board with Insect tokens. Every time one of those tokens touches the battlefield, Intruder Alarm untaps your entire board—including Aphetto Alchemist, which stands ready to continually untap The Celestus so you can repeat the process indefinitely.