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Sorin of House Markov (Borderless, Textured Foil) $73.89 Sorin of House has a lot going for it in its creature form

You can bet that after years of helping to turn others into spawns, he knows a thing or two about gaining control of others

This is much more efficient than Mono-Black Devotion, which relies on Gray Merchant of Asphodel giving the ability to draw more cards

This makes Yahenni more at home either as a supplement to cards that work well with Braids/Smokestack, etc and/or as a role-filler in Black aggressive decks as a threat that can sacrifice other creatures to get around mass removal or act as a creature to turn the corner after a wrath

Princess Power Using Auroras ability to reduce the ink cost of characters, youve got some nice choices for the next couple of turns

Because its such a diverse keyword, there is no singular sacrifice card style or strategy