There are a handful of cards that have seen way too many reprints, to the point that seeing them in a product elicits a groan
(I'd encourage you to check out the sheet, if you haven't already, if you want to see all of the individual card prices that make up the expected value.) Secondly, Double Masters is a massive set with 40 mythics and 121 rares, and especially considering the spreadsheet already lists everything out, it's just not worth putting every individual price into this article
One of the biggest reasons this card ranks highly is that you have a easily triggered card draw that costs you no mana, so a free sacrifice outlet like Phyrexian Altar does incredible work with your creatures: drawing and paying for spells with very little assistance
His Master Tactician ability even works with noncreature tokens
Id dare say that Hallowed Priest is the most played card from the entire set, especially now that lifegain has made its way back into Standard
currently, hes only available in Commander and Vintage, where his power is kept in check by other crazy sets