Blue also offers card advantage and makes for an interesting deck but with few cards to offer at all blue is never more than a splash
Since you have to cast something to trigger heroic, this should leave your hand card-neutral
A photo, your own artwork, an alter you commissioned, a custom Commander you dreamed up, or any card you can imagine
Belle, Strange but Special 4
That means at higher rarities: Cloud, Midgar Mercenary Gilgamesh, Master-at-Arms Firion, Wild Rose Warrior (free 1/1s with job select) Freya Crescent Giott, King of the Dwarves Adelbert Steiner Zidane, Tantalus Thief is also an exceptional card, even without any direct synergy
Considering all physical variations, including foils, the total exceeds 100,000 collectible cards