Saheeli, the Sun's Brilliance + Intruder Alarm

Saheeli, the Sun's Brilliance

Intruder Alarm

How it works

1. Activate any number of creatures by tapping them, adding at least .
2. Activate Saheeli by paying and tapping it, creating a token copy of another creature you control with haste.
3. When the creature token enters the battlefield, Intruder Alarm triggers, untapping all creatures.
4. Repeat.
5. If creatures you control can tap to produce at least 1, this combo nets infinite mana.

This delightful loop centers around Saheeli, the Sun's Brilliance, whose tap ability generates a temporary token copy of a creature you control for just {U}{R}. The true catalyst here is Intruder Alarm, transforming every single creature entry—including the token copies Saheeli produces—into a global untap event. As long as your creatures can tap to generate at least {U}{R} to cover Saheeli's activation cost, Intruder Alarm untaps them right back up, allowing you to cycle through infinite mana, endless creature token entries, and an overwhelming army of hasty copies.