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In my experience, the only ones I even consistently look at are Mana Drain and Midnight Clock due to their added utility and universal applications in gameplay
Teysa is just 4/4, but she is always unblockable, has she No Mercy attached and makes you 1/1 tokens and has vigilance and stays back to keep away attackers with a great ability on defense
Straight up exiles any creature thats bothering you , and instead your opponent gets a weak 2/2
Lesser powerful versions of this effect like Nighthowler and Wight of Precinct Six are also good, but since they only count creatures, they are usually much smaller than the Aberration
If you roll a 3 but there aren't any cards with mana value 2 or less in your graveyard, you'll just remove one loyalty counter from Comet