Just dont expect this trend to be too extreme: Magic 2015s cards rebounded from their rotational lows at a quicker rate than comparable cards from Journey to Nyx , for example, but both sets contain the same number of $5+ cards today
With Mono-White Humans and its variants running amok in Standard, you have to be able to block, hopefully with some incremental value along the way
Consuming Fervor, like Unstable Mutation before it, can toss on an extra six damage quite easily and quite early
One combat trick = game over
However, even if this can hit attacking, blocking, and tapped creatures, it's inability to get a creature out of the way before it blocks, and the fact it can't deal with things with more than 4 toughness make it too restrictive to be great