Veteran of the Depths + Animation Module + Intruder Alarm + Careful Cultivation

Veteran of the Depths

Animation Module

Intruder Alarm

Careful Cultivation

How it works

1. Activate Veteran of the Depths by tapping it, adding .
2. Veteran of the Depths triggers, putting a +1/+1 counter on itself.
3. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
4. Intruder Alarm triggers, untapping all creatures.
5. Repeat.

This ingenious loop turns a simple tap into a self-sustaining engine by transforming every action into fuel for the next. You begin by enchanting Veteran of the Depths with Careful Cultivation, granting it the ability to tap for two green mana. Because tapping Veteran of the Depths triggers its own ability to receive a +1/+1 counter, Animation Module simultaneously gives you the option to pay one mana to spawn a Servo artifact creature token. That new token's arrival instantly fires off Intruder Alarm's static untap trigger, refreshing Veteran of the Depths so you can tap it all over again while generating infinite green mana, an infinitely large creature, and an endless army of tokens.