Still, for the time being, it's safe to say the Rainbow Rare VSTAR collection is likely to remain the most valuable overall
The main thing this is used for is to combo it with a creature that untaps something as it enters, thereby untapping Kiki-Jikki and allowing you to loop the process until you have one million creatures
This can give you a significant advantage during battles
Sure, piloting a perfectly optimized deck with a consistent game plan can be fun too in more competitive settings, but on occasion, its fun to play a deck that leans more heavily on chance
Most importantly, this card grants the archetype a much-needed interruption through its monster negation
Broodmate Dragon is very good at these tasks, because you get not one but two independent good creatures capable of dominating many boards on their own