Unfortunately, a Google image search turned up nothing as far as alternative card backs
But Ryan, you say, Squirrels are stupid and mostly only exist in token form. Well, youd be mostly right
Given that double-sided cards have now been around for over a decade, it definitely feels as if theyve earned a place in a set that revisits past cards and has a heavy emphasis on nostalgia
For the longest time, black had difficulty dealing with enchantments, but there's been a deliberate push to expand black's removal to destroy artifacts, at least in a way that's still below white and green in terms of effectiveness
Effects that modify a creature's power and/or toughness, such as the one created by Blazing Crescendo or a +1/+1 counter, will apply to the creature no matter when they started to take effect