My theory is that the dominance of slow decks that take time to build up are pivotal to its success
For the volumes that used an early version of the Duel Monsters card game, there was far more fan positivity, and this would end up becoming the central focus of the franchise
Note: some Trainers appear at more than one rarity under different card numbers (e.g., Nemona, Clive), so the same character can show up as both SR and SAR
If the chosen permanent has in its mana cost, X is 0
That anthem effect turns your tiny merfolk army into real beaters, and the evasion from flying makes this a great late-game top deck too
Though, it's a little amusing that SuperStarmon actually interrupts the usual "Congratulations on winning!" message with his denial