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 only reason I'm running plunder was to give more spells for brenn and for moment. Mostly just an experiment, Also the units in this deck generally aren't attacking or blocking.
Play strategize instead of Plunder. Losing tempo (exhausting your unit, besides the cost) and paying a total of 6 to get card adventage is much less useful than strategize, especially in these colors.