Which gives it some longevityso long as you can keep your creature party going
Meddling Mage Few bears have as much of an origin story as Meddling Mage
Fluttershy works really well with Princess Twilight Sparkle , since most Ponies, Alicorns, Pegasi, Horses, and Unicorns have tails, allowing you to buff your entire board if you build for Twilight Sparkle's kindred ability
The activated ability, along with a Grave Pact, is a pretty cheap sweeper for everyone elses creatures
Still, it can be an issue in the long run if more cards with similar effects are introduced, as they will inevitably form a niche deck archetype that can disrupt any game plan besides that of aggro decks
Some cards enchant a creature and add a +1/+1 counter, so these are a good starting point