karn mtg cards Karn, Legacy Reforged Foil from Mystery Booster 2 (MB2) Proxy Karn, the Great Creator MTG

Not such assured long term value and quality as Search and not quite the immediacy of Snapcaster, which is why you see a bit less of him in constructed where the extreme ends of the spectrum are typically where you want cards positioned

Like many black kill spells, this spell can't target black creatures

Mary Jane Watson

You can easily get for 3+ damage in most white builds, which is quite efficient (do try to avoid trading early though, as it can hurt you later)

Again, in a dedicated deck like this, maybe that happens a lot

The difference between a near-mint copy worth 5 USD and a copy of that same card with worn edges might be just pennies, but for cards worth hundreds or thousands of dollars, the markdown becomes significant