I try with Horizon Dragon epic (bbb) before but lost ... May be because I use wrong attack ... I see later that someone win by (mB).
Here is my lose list :
1. Shaman (10) (bmb)
2. Scorpion (10) (bmm) - I ever win by this just one hit, but not work this time
3. Firework (10) (bmb) - try use more color than just yellow+red that best choice, so add blue
4. Mirage (10) (bbb)
5. Scorpion (1) (mmb) - Want to try again with this dragon, hope it can win but can't pass
6. Turquoise (10) (bmm) - I ever win by this just one hit too, but lose this time
7. Mythic (3) (bmb) - start to use young Dragon because no need to heal immediately
8. Light (10) (mmm) - see from this post ... so use the same method but lost
9. Lunar Ram (1) (bmm)
10. Fire (1) (bmm) - maybe should use (bbb)
11. Pride (10) (bmb)
12. Water (1) (mbb)
13. Diamond (10) (bmb)
14. Horizon (10) (bbb) - see someone win by Planet dragon, so add purple color
15. TITAN 10 (bmm) - final can win 😂