Kinnan, Bonder Prodigy + Leech Bonder + Song of Freyalise

Kinnan, Bonder Prodigy

Leech Bonder

Song of Freyalise

How it works

1. Activate Leech Bonder by tapping it, adding .
2. Kinnan triggers, adding .
3. Activate Leech Bonder by paying and untapping it, moving a counter from target creature onto another creature.
4. Repeat.
5. Once you have infinite mana, you may use it to activate Kinnan's ability.

This clever loop turns Leech Bonder into an infinite mana engine by exploiting its own -1/-1 counters and the mana-granting ability of Song of Freyalise. When Song of Freyalise bestows its mana-producing capability upon your creatures, tapping Leech Bonder generates blue mana which is then doubled into two blue mana thanks to Kinnan, Bonder Prodigy's passive mana-boosting effect. You can then use one of that floating mana to pay Leech Bonder's untap activation cost, moving a counter between creatures to reset it and leaving you up in mana each cycle. Once this engine yields infinite colored mana, you can funnel it directly into Kinnan, Bonder Prodigy's activated ability to dig through your library and flood the battlefield with your non-Human creatures.