If Eliminate the Competition has a home, its probably in a sacrifice deck, a sort of Aristocrats-style G/B deck or something similar
This is an app that will clearly be impactful for the long term, and thus it's a great time to focus on making the most of the game
Ironscale Hydra could still see play in a deck looking for a specific type of protection and counter synergy, but it may not be a top-tier choice in a competitive setting
It is also worth noting that while Charizard remains the headline on any rarest pokemon card list, Mewtwo sits directly behind it in collector recognition, and in certain eras, particularly the EX and Mega eras, Mewtwo's competitive dominance made it the more culturally significant card game piece
For me, I stuck to a balanced store design with a section for people to play, shelves to buy packs of cards, and a section to display and sell individual cards
When you "flicker" a permanent, it's treated as a new card that just entered the battlefield