Greens got a decent amount of acceleration which makes this a bit more playable, but its still an expensive, replaceable finisher in format where blue, black, and red all have access to a token making mechanic
Even beyond Maximus entrance, he comes well-equipped with three strength and three willpower - plus the option to quest for a single lore - making him a very dependable card for three ink
4 Strength and just 2 Willpower, along with only 1 point of Lore, are what youll find on Scar
The only time the characteristics of the back face really matter is when the permanent is on the battlefield with its back face up
If you want to dig further into calculating EV for a specific box, you can utilize resources like MTGStocks or check out the youtube video below, which does a great job of explaining a few other details you may want to consider when calculating expected value
For example, Forge Anew is a gamechanger for this and all equipment decks