Thank you for your answers, I`m trying to get this cards as fast as i can without spending money, because I very like achieving something without system help, it makes the game more interesting)
For now I`m using simple command, from: Healer; Succubus; Gigas(green ork); two Dragons(x5); and friend leader card: Cyclops; With this command I`m everytime getting 200+ GP, but when I`ve got three free spins, I`m using "heavy damage" skills of my cards, which in the end gives me 380+ GP.
Yes agree about Dragon strategies, but it`s more complicated, because it`s hard process of strengthening cards and their evolutions, I spent a lot of time to get three x5 dragons, but getting all 5 elements in two+ weeks - is really hardcore, and it`s more suitable for 100+ lvl players, then beginners) but I guess when it goes to high lvl, you`ll be already have that resistant collection against GW Bosses.