Vorel of the Hull Clade
Intruder Alarm
Thallid Shell-Dweller

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Thallid Shell-Dweller has at least three spore counters on it. Vorel of the Hull Clade does not have summoning sickness. Creatures you control can tap to produce at least .

   Steps

How does this combo work?
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.

   Results

What do I get from this combo?
Infinite creature tokens
Infinite ETB
Infinite mana creatures you control can produce
Infinite proliferate for artifacts, creatures, and lands
Infinite untap of creatures you control
Infinite untap of creatures
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