Because 4000ATK/4000DEF is no joke, nor is the 1000 burn damage you can deal whenever Hamon destroys a monster
They cant all be good, since some moving up is going to raise the bar so that even if a deck would have become good enough, it now has a tougher world in which to fight
its potentially a preview of whats to come due to Mega Evolutions possible return
And then when you pay the mana you are not playing the spell so it can't be countered then either
When a pack of cards retails at about 4, theres a huge potential profit to be had
Endrider Catalyzer, on the other hand, helps you jumpstart your engines early and provides a significant mana boost once youve hit max speed, giving you the tools to keep accelerating throughout the game