For each one, trash any 1 card under your opponent's Digimon or Tamers
Other than being pictured in an obviously cute (and beautiful) way, I particularly like the way the colors on the surface of the ice beneath its feet blend together, and the shadow of Piplups cute little frame for some reason lends some realism to the picture really letting you feel how tiny and squishable this Pokmon really is
Similarly, once an ability of a legendary creature you control has triggered an additional time due to Annie Joins Up's last ability, turning it into a nonlegendary creature won't remove that additional triggered ability from the stack.
I get three Pokemon onto my bench and then I get to switch with any of my benched Pokemon
If that becomes the case, the card will likely lose some secondary market value
Be sure to check that so that you can gauge the worth of your collection