712.13a This rule plugs a new corner-case rules hole that would sometimes cause a transforming double-faced spell with its front face up on the stack to enter the battlefield transformed even though the back face of that card is an instant or sorcery card
And the cards that you play with in paper Magic, the ones you buy at your local game store, are printed by WotC
As players have become increasingly familiar with the playstyle, found tighter and stronger builds, and learned the ins and outs of the card, its power level has risen accordingly
Being an enchantment is quite handy too as they one one of the hardest permanents to deal with, mostly because few serious threats exist that are enchantments
Whenever another creature I control enters while BB has a -1/-1 counter on it, I'll remove a -1/-1 counter from it
There is a veritable mandelbrot set of tangents to go off on already