I'd personally pick Charmander just because loading up on Fire energy and smashing the shit out of everyone with Charizard is priceless
Older sets, especially those with limited print runs, often hold nostalgic value, and even common cards can become surprisingly sought after
Overgrown Zealot Overgrown Zealot has many homes, be it toughness-matters decks, morph/manifest dread/disguise decks, and the like
Another possibility is to just aim a lot bigger, perhaps a return to red devotion
On the other side, you bounce an opponents biggest threat and watch gleefully as they discard something
Wizards says it brought in Hexproof as a replacement for Shroud, which was deemed too confusing and too commonly misunderstood