The Pokmon card game has gone from strength to strength since it span out of the popular pocket monster-collecting video games in the mid-nineties
If you had started playing when I did, around Revised and Fallen Empires, then a Counterspell looked one way, a Giant Growth and Drudge Skeletons looked one way
Usually most Zombify effects cost 4-5 mana, so the extra 2/2 flier is nice
But you have the power to restrict their options in a way that makes it more effective at removing what you want to see gone
I'd personally pick Charmander just because loading up on Fire energy and smashing the shit out of everyone with Charizard is priceless
Mother of Runes, Death's Shadow, and Elvish Mystic are all commonly used cards, and the new art for them is stunning