White gives you some good creatures to exert but pushes you mostly in a sort of token generation strategy: The Bell-Ringer plays nicely with all other colours
This has only increased following the decks appearance and performance at the Pro Tour
Mardu Charm can be used to create two blockers at instant speed, remove a medium-sized creature, or Duress an opponent in a pinch
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Sorin, Imperious Bloodlord was released back in 2019s Core Set 2020 and while its a good planeswalker, and worked in a few Vampire strategies, didnt really make much of an impact
But if a colorless card has a color identity because of a colored mana pip in its rules text, it can only go in decks that share that color identity