Overgrown Battlement + Singing Bell Strike

Overgrown Battlement

Singing Bell Strike

How it works

1. Activate Overgrown Battlement by tapping it, adding at least seven .
2. Activate Overgrown Battlement by paying 6, untapping itself.
3. Repeat.

This charming loop turns an ordinary wall into a magnificent mana-engine through a clever rules interaction. By placing Singing Bell Strike on **Overgrown Battlement**, you grant the defender the ability to untap itself for six mana, transforming its normal untap cost into a self-contained payment processor. As long as you control at least seven creatures with defender to make **Overgrown Battlement** tap for more green mana than the six required to untap it, you can feed the loop into itself indefinitely to generate infinite green mana.