Stripping away Hexproof and Indestructible not just from opposing creatures, but all opposing permanents allows you to circumvent many difficult to answer pemanents, including Theros gods like Xengaos, God of Revels, pesky protection cards like like Darksteel Plate, and shielded lands like Lotus Vale
Play with some of the most powerful Magic cards ever, whether you're into Commander, Pioneer, Legacy, or all of the above
If, after reading this article, you consult your collection of old Pokemon cards and find a bunch of 1st editions, stock those away
Confusing Listed Prices with Sold Prices This is probably the most common mistake in the book
If a creature has multiple instances of toxic, lets say toxic 1 and toxic 2, and it deals combat damage to a player, they get a total of 3 poison counters because of the two toxic abilities