Poison Dart Frog was a solid common in The Lost Caverns of Ixalan Limited, but Im not sure it has much of a home anywhere else
Apparently every pack will have one anime legendary card, like the ones shown abvove
As a result, its beneficial to build up your board before casting her with a starting point of tokens, Equipment, and/or Auras, in order for Arna to start gaining you value as soon as she hits the field, Wherever possible its best to avoid Legendary Equipment, even staples like Sword of the Animist, as they cannot benefit from Arnas token generation
The popularity of the Pokemon, its role in the video games and anime, and its demand among international collectors are factors just as decisive as technical rarity
Not only does he shut down one opponent entirely on your turn (which is a great way of preventing a player with a hand full of control spells from scuppering your plans), but he can steal your opponents' cards right from the top of their deck