In addition to that, there are card limitations
It plays well out of the box, is forgiving of play mistakes, and it's easy to change and upgrade as artifacts and reanimator are themes that show up in most sets, and the cards in the deck are easy to fit into future decks if you decide to take it apart
My Pick: Simba - Protective Cub This pick is between Te Ka - Heartless and Friends on the Other Side
Berserk and Braingeyser were also there, and stayed there for quite a while
Despite this particular stipulation making Treasure Guardian, Protector of the Cave useless unless at a location, location cards are well worth putting in your deck - not just because they make this card a lot more viable but also because they grant you passive lore every turn, meaning you dont need to actively quest with them to get it, and cannot be targeted by direct damage unless the card being used indicates it can
Being gold makes it less playable