When its is a 2/2 you are precious with it in combat and it is vulnerable to removal making it a bit weird in agro decks and very vulnerable for a four mana investment in general
Well, cards like Hermit Druid, which can mill your entire deck for a single mana if you avoid playing any basic lands, and the repeatable tutoring and graveyard-filling power of Survival of the Fittest are pretty busted, too
But the amount of beginner-friendly products and community resources available today makes it easier than ever to learn the rules and jump right into a Pokmon battle with a friend
Sure, I've never actually seen this card get the five counters from a player dying, but if it does, that's one massive, flying vampire soaring at your neck
(Source) His rationale behind making the change is that it would allow people to try out cards they wouldnt normally for a defined period of time in order to determine whether or not they wanted to house rule them to be legal within their own playgroups for a longer period of time