Specifically, Sword of Fire and Ice gets the nod in Legacy because protection from blue allows creatures to attack through True-Name Nemesis, red covers a section of cheap removal, and the trigger says draw a card. In modern I suspect many of the other swords will get their chance to shine: the protections are more relevant and cover different Modern archetypes
If you didn't know, the prisoner's dilemma is the simplest depiction of game theory in economics
(2020-11-10) The total cost to cast Blasphemous Act is locked in before you pay that cost
As Magic's most powerful phasing card and one of the best white instants ever printed, few spells in MTG allow you to do what Teferi's Protection does, which is simply to phase out for a turn
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With the unbanning of Mox Opal on Monday, however, things have changed significantly