The reason is because you'll find yourself doing a whole lot of nothing in the early part of the game, and you'll often be dead long before you get to cast those big, powerful (and expensive) spells
Worth noting that lots of creatures without Warp aren't that good with it, unless they have "enters" triggers
What competitive formats is Sword of Truth and Justice played in
A 3/1 for 4 is frail enough that this rogue doesnt get too carried away, but this is the most spiteful type of draw hate out there the kind that stops opponents from drawing extra cards and steals those draws
Selling to a local store offers several key advantages: Instant Gratification: You get paid on the spot, with no waiting for payments to clear or packages to be delivered
But with 19 sets in Standard moving forward, the odds of finding two creatures that happen to do something game-ending if you get them both on the battlefield together go up significantly