Im talking about lore wise here Hades is literally Looking for a Deal as the card title suggests, whereas Ariels card may be hinting at the ill-informed deal she made with Ursula
Ultimately, Mew ex is clearly best utilized against decks that heavily rely on other strong ex cards , as those attacks are some of the strongest in the entire game, meaning that players should absolutely take advantage of them whenever possible
Flash and hexproof are two powerful keywords to have on a creature and the number of combat tricks potentially available with this card keeps the power level higher
There are a lot of hoops you have to jump through for this one, but if you can hit all of the colors in a Creature and all the basic Land types on Lands you just win the game
Some other random goodies you might like: Maddening Hex (this would be HILARIOUS with some doublers), Chandra's Ignition (if you target something with lifelink remember it's the CREATURE doing the damage, so you can gain a TON of life off of this if the board is fairly full, and it's great with a Deathtouch source like Gift of Doom), Fire Covenant (one of the best burn spells ever), and MAYBE a Rionya, Fire Dancer since you've got all those Sorceries
