The flavor also makes me really happy
The first attempt to do this was in five card boosters for March of the Machine: Aftermath
Right now, as seen in top-level play and the shaky online client Pokemon Trading Card Game Live , competitive Pokemon is dominated by one two-card combo: Archeops, with its rapid energy acceleration ability, and Lugia VSTAR, with a quick and easy way to get two of them in play
In practice, it feels like you get a slight delay, as people tend to put off the player they can kill today until tomorrow
Not only is Yuna excellent for ramping up your board state with more powerful creatures, but Yuna ensures that any buffed creatures don't go to waste, repeatedly recycling counters to summon an overwhelming stream of powerful beasts
Im not big on grading for collections (personal preference) so this is the first I can recall reading about TAG