On platforms like Tradera, as well as at fairs and events, it is the single cards that are sold most often
I like the idea of triggering the first couple ticks of a Saga, then returning them to my hand before they die, only to cast them again
Then, you may switch Mew ex with 1 of your Benched Pokmon
If you dont need or want to board wipe right away, you can set up The Phasing of Zhalfir to go off in 1 or 2 turns, phasing out a creature you really want to keep if your enchantment survives long enough to nuke the board, or temporarily removing a big or indestructible threat that you arent able to deal with in any other way
Once theyre gone, theres a good chance theyre gone for good
The before and after of this copy of Survival of the Fittest done by Reddit user Msmadduh for his brother-in-law completely saved the card and probably double or tripled its worth