The Magic: The Gathering Final Fantasy set lands on MTG Arena first, with physical products following soon after
When added to other archetypes it dilutes the duelist's creativity as it quickly locks up extra deck space (you only have 15 slots and over half will be taken up with Invoked fusion monsters) and main deck space, you need the main man himself, the field spell, Invocation etc
Hot summer knights return
So knowing these things, you'll always want to use Mega Evolution cards with caution, with that being said, if you want to do some major damage in a majority fairy type deck, Gardevoir EX and Mega Gardevoir EX are the cards to use
(Can you taste the salt here?) Anyways, Despair Ray is decent in the fact that you can discard all those Shaymin and Hoopa-EX you used that are now just sitting the Bench