The synergy score is the minimum of enablers and payoffs, because 10 sacrifice outlets with 0 death triggers equals 0 sacrifice synergy
This sorcery saw some play in Modern for a bit, though thats owing to the fact that these 0-mana suspend cards are almost always broken with cascade spells
Green often likes to look at the power of your creatures and sometimes even demands that you sacrifice them
You'll find a passel of them saddled up and ready to take on challengers in these Outlaws of Thunder Junction Commander decks
Furthermore, third-party enthusiast sites like TCGplayer or even grading services such as Professional Sports Authenticator (PSA) have indexes that allow you to see, perhaps most importantly, the historical trends of raw and graded card prices
Id consider using Pramikon in the same fashion as the second Sevinne option, making attacking troublesome