This was always the common in the cycle, but it kept changing size. I several times tried to tack on a "draw a card" rider, which balanced quite well across the rest of the cycle, but mostly detracted from them.

Blue has similar effects to this quite a bit; the most similar is "3U. Instant. -7/-0," which is practically the same. The almost-useless targeting restriction (see below) is also a nod to not making this strictly better.

I went back and forth with "what combination of cards should have an attacking/defending rider". I think my favourite was blue "target attacking", white "target defending", and then try and pair black and green with another reversed pair so black was slightly restricted in what it can hit, and green could basically always hit your creatures. But I couldn't think of anything for the second pair. So I made black take attacking only, leaving green and this unpaired. Green was most fun when it was simplest, so to avoid having two unadorned, I made this "attacking or defending" even though that's almost always useless. Maybe I should switch that with green?