What a coincidence! A few days ago my friend was thinking about a troop like this that goes underneath walls and I think its a great idea! Maybe it would be good if it could only go underneath walls every now and then.
The One Con:
Its a bit like a hog rider in the way it ignores walls, but still I love the idea
x---xXx---x Level 80 - TH8 - MAX! | IGN: Willsbills_ | Clan Leader: DarkRevolution
"14 DAYS FOR AN UPGRADE? - AIN'T NOBODY GOT TIME FO' DAT!"
x---xXx---x
Try making it like wall breakers, they go underground and plant a giant bomb resulting in 100 damage to buildings it targets. It's also splash. It dies upon attack like the wall breaker so it's not OP, cuz then defenses couldnt really target it. The housing space should be high though, atleast 5. If it's favourite target is defenses, which is something everyone wants, it takes up 15 housing space.