Leech Bonder + Song of Freyalise + Primal Vigor

Leech Bonder

Song of Freyalise

Primal Vigor

How it works

1. Activate Leech Bonder by tapping it, adding .
2. Activate Leech Bonder by paying and untapping it, removing a +1/+1 counter from target creature and putting two +1/+1 counters on a different creature due to Primal Vigor.
3. Repeat.

This clever loop turns Leech Bonder into an exponential counter factory by leveraging the replacement effect of Primal Vigor to generate a surplus of +1/+1 counters every time you move them. While you use Leech Bonder's activated ability to shift counters back and forth, you'll need a way to fund the blue mana cost and untap the Bonder—which is where Song of Freyalise comes in handy, turning your creatures into mana dorks so you can endlessly repeat the process. Ultimately, Primal Vigor ensures that every iteration leaves your creatures with strictly more counters than they started with, resulting in an infinite growth of power across your board.