MTG Combo: Herald's Horn + Oathsworn Vampire + Phyrexian Altar
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![The Ancient House of Markov [Primer] thumbnail](http://static.tappedout.net/chart/20-0-70-10-0-small.png)
EDH
27
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![Ambition's Cost feature for The Ancient House of Markov [Primer]](http://static.tappedout.net/mtg-cards-2/commander-2017/ambitions-cost/mtg-cards/_user-added/pieguy396-ambitions-cost-15082840180.jpg)