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.
Wardwielder doesn't seem like he would be that good. You only have 1 eilyn's favor, you usually don't want to proactively protect face, and by the time you set up waystone he is long dead. Has your testing proven otherwise thus far?
I haven't played enough games to say. I think it's still worth testing with potentially 7 effects that give face Aegis. I plan to jam this some more tomorrow and I definitely will have my eye on it. If it doesn't work, Darkveil Agent will probably replace it.