When you start playing on the ladder or against people in real life, they try to play technical cards like Rotom or Lumineon V to support the main attacker , which is Charizard EX
If you level it up properly you get a decent effect, but you can also summon it via Insect Imitation by tributing any 4-star Insect
Furthermore, they almost have no means of Special Summoning outside of their own theme (that doesn't rely on monster presence on the field), so any Summon negation cards such as "Forced Back", "Solemn Warning", "Chaos Trap Hole", and "Horn of Heaven" can help slow them down
I remember being there in the crowd at the 2016 Pokmon TCG World Championships when Japanese player Shintaro Ito took first place with the card
The latter is a bigger problem because it also denies you from using the Shady Dealings engine, as its nullifies Drizzile and Inteleons ability
Doubling Season was the first card to double the number of tokens you create