The ShiftstonedEternal Power Calculator is a deck-building tool that visualizes your odds of drawing enough Influence and Power based specifically on the cards found in your deck.
The sauropods are market or plunder fodder. The symbol allows us to plunder them too since we don't want to take a turn off of playing shadow otherwise.
Is Sauropod primarily used as a market fodder?
Also I don't get why your running the shadow symbol.