Oooh, perfect token defence for might be a bit good.

Hmm... you may be right. Perhaps instead "Whenever one or more creatures attack you, ~ deals 3 damage to one of those creatures"?

On reconsideration, actually, Caltrops cost , and Rain of Blades cost . And this is pingable. So this is probably okay.

Except 3/1 was a bit much for 1 mana even on a defender - compare Cinder Wall. Taken down to 2/1.

We worried why this feels red, but I still agree it does feel red. I think just because of the indiscriminate damage. Red has had this iirc only on hybrid cards like Fire at Will but it has appeared on them.

And also possibly because it fits a red strategy, in that you can leave just one guy on defence, attack with everyone else, and hope to win before anyone plays many /2 or /3 creatures.

I wish it could be costed at 3/1 since it would feel better than when it was done killing small creatures it can trade with something decent, but I agree 3/1 for R would be too good and don't really want it to cost 1R either. I'm not sure.

Playtesting also requested a "You may" for if people forget. I can see the reasoning, but it's more in line with Caltrops and Powerstone Minefield if it just always deals the damage.

This card's effect was frustratingly strong against a number of weenie decks. Trying bumping the ability to have a hefty activation cost. It may end up needing to just be killed entirely.