The only problem is that you cant effectively choose what goes down
For casual games this means pretty much any card you own that isnt currently part of the game
For decks with three or more colors, where you might only be able to afford a small number of MDFCs since you'll need most of your lands to either be basics (for ramping / tutoring purposes) or tap for multiple colors of mana, the best MDFCs are Bala Ged Recovery (seriously, if you have green mana in your deck, play this card), Valakut Awakening, Hagra Mauling, and Ondu Inversion, along with the mythic cycle, which is almost always good if you can afford another land that only taps for a single color of mana
You could make an argument for Force of Negation being closer to this card since its easier to cast, but this answers anything at any time as long as your deck is mostly the best color in the game
Is Fell The Profane Good In Modern
Hang In There