The most common evolved Pokmon card used for this purpose is the Dusknoir card from Night Wanderer [SV6a] as shown by, for example, the Terapagos ex/Dusknoir and Palkia VSTAR/Dusknoir decks
Once you've grabbed your box of choice or bought singles to fill out your deck, you are prepared to start testing yourself against fellow competitors
It sees play in a bunch of Legacy decks, although its often not quite used in the best of the best decks there
Shuffle 1 "Harpie Lady Sisters" from your Monster Zone into the Deck, then you can Special Summon 3 "Harpie" monsters with different original names, 1 each from your hand, Deck, and GY
Borrowed Knowledge What calls my attention in Borrowed Knowledge is the mode draw cards equal to the number of cards in target opponents hand. Although its a 4-mana sorcery, it can potentially be a 4-mana draw 5-6 cards
Remember, the deckbuilding process is all about experimentation, so dont be disheartened if your first deck does not deliver positive results straight away