While it may not be morally ok, it's a video game, so there aren't any real consequences
Each pack contains 100 sleeves, enough to sleeve your entire Magic deck including your sideboard
For as long as that land has a blight counter on it, it loses all land types and abilities and has Tap: Add C. Whenever you tap a land for C, add an additional C
I just slammed it into my rebuild of Edgar Markov, as hitting the card draw or removal vampires is clutch
Sure, its not an attack for every situation and requires a lot of setup, but if used at the right time with cards that get Dreppy out quickly, you can catch your opponent off-guard and maybe even take multiple Prize cards
For those decks where it was castable and removal was called for, Vindicate often made it into Extended and even as far as Legacy