Interestingly, his standard, Rare version is very cheap, selling for way under $1 , so if you want to get multiple Scar cards on your side, and really stack those card draws, its most certainly affordable to do so
On average it will be a very helpful card
You might choose to exile a card you know you cant play just to get it out of the way, like if your opponent has a Blightsteel Colossus
My first takeaway when reading the card is that the ability isnt targeted, meaning that someone cant counter the spell by removing the creature
Nothing is more delightful than seeing a bunch of Thragtusk style cards go directly to the bin without bothering you at all, likely being replaced with elves and lands
Slowing things down slightly is where blue-black Pirates shine thanks to the impressive Hostage Taker