In each bracket description, you'll also find guidance around four kinds of effects that can really impact games: two-card infinite combos, extra turns, mass land denial, and tutors (for things other than lands), noting where and how you should expect to see them
In a singleton format like Commander, that effect can really shine
Marrow-Gnawer sac-loop: tap Marrow-Gnawer, sacrifice one Rat, make a token for every Rat you control then swing with fear for a one-sided alpha strike
9 Kasla, The Broken Halo Gather Around, We're Casting Spells As a commander that provides tons of value for casting convoke cards, Kasla, the Broken Halo rewards you with extra cards every time you cast a spell with the convoke ability
Prophecy introduced no keyword mechanics
It can feel a little pricey though if youre planning on hard casting it, though