happy halloween. flyer. witcher cauldron with magic potion and steam in creepy dark forest with ghosts

agaric amanita and art autumn banner bat bats boiler branch brew card cartoon cauldron celebration creepy dark death elixir evil fear flyer flying forest ghost ghosts halloween happy horror illustration jack kind landscape lantern magic moon mushroom mushrooms mystic night party poisonous poster pot potion pumpkin pumpkins scary spider spirit steam tree vector witch witchcraft witcher wood