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.
I prefer the Kerasaur for two reasons, the stats are better when you get an inspire from Alhed or Zuberi, usually giving your opponent a 1 turn clock, and for the draw ofc, its specialy good if you have one of the inspires in play, if they kill it you get an extra threat... plus vs combrei its insane as they will usually spend vanq on Alhed or SST, then the only way to deal with Kerasaur is multiple finest/standard, and when thats the case you are winning pretty much all the time. Now, some people don`t like Kerasaur but in this deck it makes lots of sense, hope that clarifies ^^