These stand out immediately and are considered rare because they look like unfinished prototypes
Keep one deck for yourself, give one to a friend, and learn as you play together
I can easily see it showing up in Ramp decks, Reanimator decks, and everything in between
You can let your chosen target attack another player and deal lethal damage to them, then cast Settle in the end of combat step, when those creatures are still considered attacking but after damage has been dealt, to take out two birds with one stone
Corrupted then checks to see if an opponent has three poison counters, giving extra benefits if they do
Spending eight mana to potentially Fireball someone for ten is a really big game