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
Request clear, high-resolution photos of the front, back, and corners, preferably outside of any protective sleeve that might cause a glare
JPN versions of Heat Wave Arena cards historically carry a 15-40% price premium over their English Destined Rivals counterparts
You get some quick land ramp and removal if you need it with this card
Today, it's still not bad in Commander
It's in Sultai colors, which has the highest selection of mutate cards to choose from