Mana is the most important resource in Magic, and pretty much every EDH deck plays at least a little ramp, with veterans often recommending about 10 ramp cards, though this varies by deck curve and win speed
Island Sanctuary on crack, Moat stops all creatures without flying, period
Read More: The 10 Best Enchantments In Commander 7 Marchesa, the Black Rose Marchesa, the Black Rose is a four mana Blue, Black, and Red 3/3 with dethrone
Cards from Alpha have a different corner radius than any other tournament-legal Traditional Magic card
The card also gives any other legendary and artifact spell flash, making you an unstoppable force once it hits the field
Even when not as spot-on, I got close with a few of my other predictions as well