Complementary colors are used in the artworks of Altair, Vega, Sirius, Unukalhai and Procyon
double strike doesnt do a whole lot to life totals if there are blockers
It gains ATK for each Normal Monster in the player's Graveyard and has the potential to be very high
Its trivially easy to cast spells for free or buy into cost reduction mechanics like delve and emerge, and Cellarspawn just throws out damage while doing so
As we saw in Scarlet and Violet with Miriam, the price may eventually come down once the hype of the set moves on
Before then, Buster Blader did have some support Emblem of Dragon Destroyer searches it, Skilled White Magician and Miracle Restoring use Spell Counters to put it on the board, and Dark Paladin is a Fusion Monster that uses it and Dark Magician as materials