I'm a HUGE proponent of running veiler and other handtraps over imperm because I like to mazimize the chance of drawing into them on the opponents turn with the field spell
That said, Rampaging Ferocidon is now just another three-drop in a sea of good red three-drops, and you could just as easily end up wanting Goblin Rabblemaster, Goblin Chainwhirler, or no three-drops at all depending on how you build your red decks
At this point, we have a permanent, it has counters, it has effects upon entering the battlefield, it has unique language relevant to it, and it can be cast from exile
You want to make sure that buying packs is the best use of your money or if you should stick to just buying the sets singles
Return target permanent to its owners hand if that permanent shares a color with the most common color among all permanents or the color tied for most common . Basically, if there are five blue permanents on the battlefield and three red ones, I can target and bounce the blue ones