Remove the rare land if you don't have it. It's not that important and if you're on a budget there are better places to spend stone. Just add fire sigils. The market is also optional and can be replaced with a different card like a removal spell or another dude.
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.
Nice deck. BTW, don't forget that Redplate Crasher can target itself for the purpose of running out a free Tempered Sentinel. You could've won the game against Zigfrid a few turns earlier with that trick.