Im a big Mardu gamer, but all said and done its Boros and Rakdos I enjoy, and I find red to ultimately be a better support color than black (which is an article for another time)
Four mana is expensive, but for what this card allows you to do, its a fair cost
However, being able to shrewdly recycle your army's deck's resources into more warriors for conquest and providing a boost, minor as it is, to the combat efficacy of another unit is at least something
In the examples below, a picture of Wooper has been slapped on Voltorbs Base Set 2 card, with Voltorb cut out of the image
Mutational Advantage As a Fallout fan, Ive gushed over many cards from the Fallout set
they do come with some great accessories and a good selection of cards thatll be ready to go straight out of the box, but $50 or more per deck is a lot of money for players who may only want to play casually