Coming into play tapped or always dealing you damage is often too much of a drawback to have on many or any of your lands and would not be worth it for a marginal effect
The set also comes with TCG card sleeves and a playmat that features artwork that is similar to the VMAX promo
The Reaper is certainly a powerful Commander if you wrap your head around your -1/-1 strategy, but I do think Auntie Ools card draw is the more compelling feature, as you might even be able to draw The Reaper, and other synergistic cards, by exploiting your Ward/Blight abilities
If you wanna get fancy there are some other supplies that will make your proxies prettier or nicer to hold, but those are the basics
(Melds with Vanille, Cheerful l'Cie.)
Whenever Go-Shintai of Life's Origin or another nontoken Shrine enters the battlefield under your control, create a 1/1 colorless Shrine enchantment creature token