Depending on who you ask, Modern Horizons 2 either ruined the Modern format or changed it for the better. I happen to be of the latter opinion and got into a dispute with another MTG Rocks writer on the topic in the podcast we put out this week.
Regardless of your opinion on the matter, MH2 undisputably changed Modern and many other MTG formats. Powerful cards like
Ragavan, Nimble Pilferer
Ragavan, Nimble Pilferer
Whenever Ragavan deals combat damage to a player, create a Treasure token and exile the top card of that player's library. Until end of turn, you may cast that card.
Dash {1}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)
, and
Dragon’s Rage Channeler
Dragon’s Rage Channeler
Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
Delirium — As long as there are four or more card types among cards in your graveyard, this creature gets +2/+2, has flying, and attacks each combat if able.
amongst others are being played everywhere! We need a way to deal with these cards. And that’s where
Prismatic Ending
Prismatic Ending
Converge — Exile target nonland permanent if its mana value is less than or equal to the number of colors of mana spent to cast this spell.
comes in.
Prismatic Ending is truly one the best and most versatile removal spells printed in recent history, and one could argue of all time. It simply answers so many threats. So, even though it is just an uncommon card, it actually has a lot of financial potential.
Prismatic Ending
Wizards of the Coast 
Wizards of the Coast
Prismatic Ending is still relatively cheap at the time of writing. The most basic version of the card runs for about $3.00. And if you’re into “MTG Bling”, there are etched foil and retro foil versions, but of course, these will cost you extra (around $8.00+ a card).
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The Future of Prismatic Ending
There’s a good chance that Prismatic Ending could get even more expensive when MH2 finally goes out of print. Look at
Path to Exile
Path to Exile
Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.
for example, another uncommon removal spell that was a staple of Modern for years and used to be a $10.00 card. (Of course, now Path to Exile is readily available for about $3.00 a card, but that’s after countless reprintings.)
Wizards of the Coast 
Wizards of the Coast
Prismatic Ending has only one printing on the other hand. And it’s surpassed Path to Exile as the removal of choice in Modern. For those reasons, you can expect Prismatic Ending to reach $5.00+ at some point in its life time (barring reprints).
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