Upon pick up, choose an Attack card. At the start of combat, it will be in your hand.
The card is added to your normal starting hand. It takes the place of a drawn card.
Bottled Flame is not the same as Innate. Duplicating a Bottled Flame card will NOT draw the copy at the start of your hand (whereas it would if the card had Innate).
Bottled Flame is an Uncommon Relic.