What does Harmonize do in MTG?

Harmonize is an official Magic: The Gathering keyword. The ranked cards above show how it works in practice.

What is the best Harmonize card?

By popularity, Nature's Rhythm is among the most-played Harmonize cards — see the full ranked list above.

Harmonize is a Magic: The Gathering keyword. Below are the best Harmonize cards of all time, ranked by popularity.

What does Harmonize do in MTG?: Harmonize is an official Magic: The Gathering keyword. The ranked cards above show how it works in practice.
What is the best Harmonize card?: By popularity, Nature's Rhythm is among the most-played Harmonize cards — see the full ranked list above.