Vorel of the Hull Clade + Intruder Alarm + Thallid Shell-Dweller

Vorel of the Hull Clade

Intruder Alarm

Thallid Shell-Dweller

How it works

1. Activate all mana-producing creatures you control by tapping them, adding at least .
2. Activate Vorel of the Hull Clade by paying and tapping it, doubling the number of counters on Thallid Shell-Dweller.
3. Activate Thallid Shell-Dweller by removing three spore counters from it, creating a 1/1 Saproling creature token.
4. When the Saproling enters the battlefield, Intruder Alarm triggers, untapping all creatures.
5. Repeat.
6. If creatures you control can tap to produce at least 1, this combo nets infinite mana and you may target any creature using Vorel of the Hull Clade.
7. This combo also nets infinite spore counters on Thallid Shell-Dweller if it has four or more spore counters to start the combo.

This loop relies on the brilliant interaction between Vorel of the Hull Clade and Intruder Alarm to continuously exploit the counters accumulating on Thallid Shell-Dweller. As Vorel of the Hull Clade doubles the spore counters, Thallid Shell-Dweller eventually reaches the threshold to spawn a Saproling token, whose entry triggers Intruder Alarm to untap everything—including your mana producers and Vorel of the Hull Clade itself. Because Intruder Alarm shuts off your normal untap steps, this creature-entry cascade is your only way forward, turning every newly birthed Saproling into a fresh wave of mana and doubling opportunities.