Phyrexian Arena is one of those, and youll play it whenever your game plan is to get ahead on resources, like to get an edge in midrange mirrors or to beat control decks
Zen Takahashi While I believe that Prismatic Ending is a better card than Solitude, as shown by how much more the former sees play in Legacy, I do believe that in the context of Modern, Solitude is the best white card in the format
Giving the ability to Clue tokens gives those artifact tokens more use beyond just sacrificing them to draw cards, and Merchant of the Truth has respectable stats and relevant creature types without all the other text
Creature - Goblin Warrior Scourge of the Throne Flying Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.) Whenever this creature attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures
The biggest difference, other than colour and creature type, is the cost
Decimate can generate enormous value as a four-for-one, and that kind of ratio is rare outside of boardwipes