Box shown below is made with Oak interior and Oak Exterior
With its affinity for spirits, it comes down cheaper than expected, and once on the field, it continuously produces 1/1 flying spirit whenever your other spirits die or deal damage
Even if you tap a creature to completely remove the generic mana cost, harmonizing is usually more expensive than casting spells the old-fashioned way, and besides, that tapped creatures could have done something else
Jhoira allows for huge creatures with massive converted mana costs to be suspended for mere fractions of their mana costs, subverting a great deal of their costs
An example is Copper Host Crusher, a terrifying Phyrexian monster that any green draft deck would want
But unfortunately, these numbers do not mean much to me for a couple of reasons: First, I (and most of you) can't get StarCityGames or TCGplayer Mid prices when we sell our cards (wouldn't that be nice?)