The main idea of this deck is to win with high value units like Siege Train, Prism Golem, Volatile Grenadin (if they choose to give it +3/+3 instead of taking 4 damage instead. Mightweaver gives units with 5+ attack double damage.
Kato, Arena Herald is there to hold fort because this is not a fast aggro deck. I try to limit cards in the Expedition format for fun. There maybe better substitues for the other units/weapons, but for now this seems to work. Been testing it on Gauntlet.
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.