You can never look at what an ability does, before you have to choose. You pick the health increase buff twice, then the next time you pick up health you heal for a measly 40 hp. The ad rewards are not worth it at all. Only one revive chance. Progression just halts after the first few dungeons and you will either have to grind for weeks or spend insane amounts of rl currency. You kill the boss and it doesn't register. All in all a horrible, unsatisfactory game.