Myr Retriever and Dualcaster Mage aren't super expensive, but both are foundational cards many combos rely on and fine value pieces on their own, so they're worth adding to your collection
Cards like The Rack are strong in multiples, as theres a huge difference between taking 2 or 6 damage every turn
A fused spell is one spell, not two
It's an amazing option for a tempo strategy where it kills quickly if you have some bounce or tap effects in your deck, and it works with auras, equipment, and pretty much everything in the game of Magic
You may play that card until you exile another card with Furious Rise
Not knowing that, the designer instinct is toward Magic 's enemy colors like green versus blue