One vial is enough to play the game, however you'll also need to mint a healer later on to go with it! Capture devices are not guaranteed however so you may need more than 1 vial to be able to capture wild creatures (or buy a capture device from the market once the items can be opened from the vials).
One vial is enough to play the game, however you'll also need to mint a healer later on to go with it! Capture devices are not guaranteed however so you may need more than 1 vial to be able to capture wild creatures (or buy a capture device from the market once the items can be opened from the vials).