As someone whos read up on all the precons from the Commander series, I can safely say that Commander 2016 was the most ambitious EDH-related product WotC ever made
This can be employed either on the cards artwork (holo) or background (reverse holo), making them more compelling and typically rarer than their non-holographic counterparts
The goal is, in conjunction with Lands that can tap for multiple mana at a time, to Cascade into Creative Technique and ideally win the game on the same turn
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Similar to Sek'Kuar, Deathkeeper, Bhaal requires nontoken fodder to trigger its abilities, so things like Endless Cockroaches and Bloodsoaked Champion make great additions to a Bhaal deck
You can see some of the best, which have been shared by Japanese pack crackers online, at this link