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’m down to 3 now, the meta was full of mostly greedy units that you don’t want to face multiples of such as Riftfeeder Wasp, some Aegis threats, Tasbu/Katra/Icaria, Dawnwalker/Endless Nightmare etc etc and sometimes you get random two for ones on board or take out many “tokens”. In most games I’m happy to draw exactly one or none but it was crucial in specific matchups. I think you would even be fine playing none right now I’d consider that since people seem to have veered more towards reasonable units.