halloween polyjuice potion making!

adventure autumn book cauldron legs fall foaming goblets granger green halloween harry hermione hogwarts instructions magic old polyjuice potion potter text wand witch wizard fantasy world beautiful twilight purple tree trees yellow maple leaves foliage foam bubbles light candle burner bookmark handwritten stone floor embossing engraving bindweed stem branches trunks steam evaporation boiling glow shine handwriting liquid drink substance experiment study mischief secret fan art fanart fans fiction fun sparkling children universe