Dragon Keeper

Dragon Keeper is a dragon auto-battler. Buy dragons in the hatchery with your Hoard, place them on the battlefield, and watch your flight tear through rival keepers on its own.

Match three of the same dragon to grow a Drake. Match three Drakes to raise an Elder. Stack Fire, Frost, Storm, and Earth synergies, bank Hoard to earn interest, and level up your keeper to field a bigger flight. Lose a battle and you bleed health. Hit zero and the run is over.