Harmony

Ongoing Spell — Buff • Cost: 2

Channeling (Stays in play. Sacrifice it when you lose your Finesse hero.)
Whenever you play a spell, summon a 0/1 neutral Dancer token (limit: 3).
Sacrifice Harmony → "Stop the music." (Your Dancers will flip over!)

Neutral • Finesse Magic

Card-Specific Rulings

Harmony does not trigger itself when you play it. You have to play another spell after Harmony in order to get your first Dancer token. — Sirlin, 03/02/16

You can't target the Dancer token Harmony summons with the very same spell that triggered Harmony. For example, if you play Bloom to give a unit +1/+1, that will cause Harmony to give you a new Dancer token, but you must completely resolve Bloom BEFORE you even get the new Dancer token. — Sirlin, 03/02/16

If you lose your Finesse hero, that forces you to sacrifice Harmony. This does NOT count as paying the cost to "Stop the music" so this will not cause your Dancers to flip over to become Angry Dancers. — Sirlin, 03/04/16

The purpose of "stopping the music" is to flip over any Dancers you control. Doing this transforms them to Angry Dancers. — Sirlin, 03/04/16