For that, youll be able to discard any number of creature cards as it enters the battlefield, gaining a number of keyword counters - including flying, trample, haste, indestructible, deathtouch and more - if it discards cards with those keywords
Affinity is an aggro deck and a synergy deck both at once
Its also worth noting that while the starter decks all offer different gameplay styles, if youre a more casual fan just looking to enjoy a Disney card game, theres nothing wrong with picking a starter deck based on whether it has your favourite Disney characters in it
But the effect isnt terribly useful without some way to interact with or shuffle the upcoming cards in your library
Entei - 001/009 Ho-Oh - 002/009 Suicune - 003-009 Kyogre - 004/009 Raikou - 005/009 Lugia - 006/009 Groudon - 007/009 Tauros - 008/009 Rayquaza - 009/009 PokPark Promotional Set (2005) This was a set of promotional cards (featured in a bigger promotional set called PCG-P) given to the first attendees of the grand opening "non-permanent" PokPark in Japan in 2005
Feel free to build that to your taste (heck, feel free to build the whole deck however you want), but my one major piece of advice is make sure you can get any basic land