It makes two Black mana when sacrificing recurring things like Bloodghast and Reassembling Skeleton
Next you would want to determine approximately what grade you think the card would receive graded and see the expected graded value of that grade
If you are collecting long term, protect your cards, be careful with hype, and buy the cards and products you genuinely enjoy
Drawing two Melira, Sylvok Outcast in an opening hand is basically the same as mulliganing to six cards before you decide
Smart management Use market charts and historical data to decide when to hold, sell, or wishlist
As suggested by Redditor Aaarrrgh89, Tiamat is the piece that the previous Prossh Food Chain combo is missing: a way to amass 38 dragons into your hand