Hmm... Still working on this. Jaroot is born from the flavor text of Typhoon Season. Originally, I gave him "Whenever a wall you control goes to the graveyard from play, deal 1 damage to ~.", but, while I think it's okay to throw something like this in a set once in a while, the payoff doesn't seem that great. Not sure where to take this card from here.

Added the 'wallsplosion' effect instead.

Changed 'sacrifice an artifact' to 'exile an artifact in your graveyard'. New Mirrodin is gearing up to have some very clean graveyards...

I like the design. It seems strange red gets defenders, but red does get walls.

Reminds me a bit of Ib Halfheart, Goblin Tactician. He makes tokens, and then they explode.

Walls may not feel like creatures, but they are, so you can just say "Whenever a Wall dies".

Is it supposed to create a chain that culminates in the death of all of the walls and potentially a large amount of damage?

Aah. Walls die. That's weird. Thank you Alex.

And, yeah, this is supposed to go cablooie. The first time a wall is hit, it should explode the battlefield... assuming you have a few out there... and kill Jaroot too.

Don't you mean "1 damage to each creature?"

I do. Thank you Link.