Rewards from the Bewitched World Quest-
- Adding any ingredient or wood: I Did My Part;
- Adding 1 ingredient: Witches Lil' Helper;
- Adding 50 ingredients: Banebringers' Bane;
- Adding 500 ingredients: Honorary Witch;
- Adding 1 wood: Fire Lighter;
- Adding 100 wood: Fire Devil;
- Adding 500 wood: Pyromaniac.
- Reaching 750 favour points: Bewitcher.
- For 10 days the Game World will get an experience points bonus of 50%
- Once you've added items to the cauldron, you can speak to NPC Minzy about trading. You can trade favour points earned through filling the cauldron for rewards! You will get an amount of favour points for each ingredient you put into the cauldron, which varies with the different ingredients. Keep in mind that the favour points you gained will transfer to the next year's event if you choose not to spend it now.
Here's a list of items you can exchange with your favour points-
Mana Potion = 5 Favour Points
Strong Mana Potion = 8 Favour Points
Great Mana Potions = 12 Favour Points
Ultimate Mana Potion = 37 Favour Points
Health Potion = 5 Favour Points 
Strong Health Potion = 10 Favour Points
Great Health Potion = 19 Favour Points
Ultimate Health Potion = 31 Favour Points
Supreme Health Potion = 51 Favour Points
Great Spirit Potion = 19 Favour Points
Ultimate Spirit Potion = 35 Favour Points
Black Raven Kit = 1,000 Favour Points
Grey Raven Kit = 1,000 Favour Points
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White Raven Kit = 1,000 Favour Points
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*You can only take one raven per year
Sources:
https://tibia.fandom.com/wiki/Bewitched
https://www.tibia.com/news/?subtopic=newsarchive&id=5079&fbegind=27&fbeginm=2&fbeginy=2017&fendd=28&fendm=3&fendy=2020&flist=11111111