I personally love this way to get monsters. Old,very old or a bit more new...with this method i completed some pages in books 🙂 And because i like it so much,i have litle sugestions : Instead of gold reward on card flipping to get a lvl 5 or 6 gold/team gold rune ; Instead of food reward to get x2 vault keys 🙂 Is just my opinion 🙂