If you can line up a Windgrace's Judgment against all opponents biggest creatures, you gas up your hand while you make Kraven bigger than that 6-pack of his
He is also a touch risky to use on certain cards that you really want continued access to throughout the game due to them getting exiled
So, having another kind of card to help you do thatanother card one's opponents must challenge to removemeans changing strategy
Lair of the Ashen Idol Plane: Azgol At the beginning of your upkeep, sacrifice a creature
This example works for all cards with exploit, you just swap the second ability with whatever the card with exploit does if you choose to sacrifice a creature
Dark Petition Dark Petition is a powerful tutor, starting off worse than Diabolic Tutor at face value, but ending up on par with Demonic Tutor if you achieve spell mastery