Portal Event Act 2 Reward: Potion of Slumber

I've cleared up to Act 2 of the portal event. Making my phone kill more stuff lol I usually don't open portal event rewards and keep them in bubbles, but this time there were fireworks included, so I had no choice but to open them.. I got 2 Potions of Slumber. First, it gave me 4 Set Dragon Eggs, and when I tapped it, it gave me a purple item that looked similar to itself, so I tapped again and it transformed into a Dragon Tree.. I think I can get items by tapping occasionally like with Fluff. Anyway, it's almost been 2 months since I started Merge Dragons, and it feels like there are still many new items left, so I can't quit the game because it's fun to discover them lol