I dropped 2 dragon in 24 hours, neither from Vlod. I kill Vlod out of habit. For those two drops I had 3x daily combo and bigger luck. Seems bigger luck vanity is what made the difference for me. But, 100% reroll would be even better.

Whatever the conclusion, grats on your drops. Seems paying money for elixir rewards well if that's your cup of tea. If not, wait for combo from daily and use luck vanity. Like I said, I dropped 2 dragons within probably 3 hours of actual farming.

Good luck all.