Attentive Sunscribe + Arwen Undómiel + Crystalline Crawler + Freed from the Real + Primal Vigor

Attentive Sunscribe

Arwen Undómiel

Crystalline Crawler

Freed from the Real

Primal Vigor

How it works

1. Activate Freed from the Real's first ability by paying , tapping Attentive Sunscribe.
2. Attentive Sunscribe triggers, causing you to scry 1.
3. Arwen Undómiel triggers, putting two +1/+1 counters on Crystalline Crawler.
4. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding .
5. Activate Freed from the Real's second ability by paying , untapping Attentive Sunscribe.
6. Repeat.

This crafty loop centers on enchanting Attentive Sunscribe with Freed from the Real, allowing you to repeatedly tap and untap the creature for just a single blue mana. Each time you tap the Sunscribe, its triggered ability causes you to scry, which in turn triggers Arwen Undómiel to grow your creatures. To fuel this motion indefinitely, Crystalline Crawler steps in: Arwen's scry-triggered growth places counters on the Crawler that you can instantly peel off for mana, effectively converting the card-selection triggers into the blue mana needed to keep Freed from the Real untapping the board. Meanwhile, Primal Vigor supercharges the entire engine by doubling the +1/+1 counters placed on Crystalline Crawler, ensuring you always net a surplus of mana and counters with every single iteration.