Just felt like a more modern template for Blaster Mage?

In fact it is just that. But it can hit a lot more things since only about 1/5 or less of creatures with defender are walls.

I make it more than 50% of defenders being Walls: 109 Walls with defender, 94 non-Wall creatures with defender (and that list has quite a lot of a few false positives like Defender en-Vec, Grotag Siege-Runner and Jungle Patrol).

But nonetheless, sure, the other 50% are worth destroying too.

I took your search and resorted to see what the stats are like in the modern environment And got roughly 86 non-wall defenders vs. 46 wall defenders. So in terms of modern/current design environment it's closer to 1/3. Either way I made this card and several others I've done recently by using the random button on gatherer and making anything that comes to mind. I think that this is a decent update to an old card that would not likely see any play today.

Also I apologize for my error in the of the top of my head stat. I should have tried to look into it before using the stat.