Dark Machamps first attack (30 damage for two fighting energy) was fine for the time, but its the cards second attack, Fling, that is the more interesting one
The Evol monsters, divided between their types into the Evoltiles (Reptiles), Evolsaurs (Dinosaurs), and Evolzars (Dragons) historically had a place in Dinorabbit, which deigned to use their maindeck cards in favor of simply making their Xyz as often as physically possible
However, with the price-per-pack of XY Evolutions continuing to rise, it's hard to justify opening this set with the expectation that you'll get more value out than you put in
However, just like the Persian card above, its almost certain that these particular cards arent going to be used in play at all, given that the standard variant of Houndoom is selling for around $0.1 4, while the Illustration Rare commands an average price of $25