I think its up to each deckbuilder to decide
Specifically, fusion summoning during the opponent's turn for maximum value
Story of N's Zoroark ex: Inspired by the mysterious and cunning nature of Dark type Pokmon, this card symbolizes strategy and deception
Blastoise ex SAR 202/165 The last card on this list comes in the form of another SAR, this time as one of the main Kanto starter evolution lines
PSA 10 examples are especially difficult, which gives this card serious appeal at the high end of the market
A dedicated "draw extra cards" effect seemingly would have to give the player more resources to end with to be usefulif a card has the ability to allow the user to, say, draw two cards when played, the player would have an increase in options overall, but if a player only drew one card, they would have the same number of cards they started with