Boost cards for monsters
Haypi monster should put this feature in thier next update. boost cards are found by daily rewards or beating vet or exp levels.boost cards come in different forms. basiaclly they are cards that could raise your capture rate but different boost cards boost diferent rariety.They also help you boost your speed,defense,attack,and defense. different boost cards do different things such as the speed boost cards boosts your speed while battling in pvp or laddar.You can activate the boost card in a battle by tapping a icon that says Boost card health etc... you could also get boost cards from the shop for 10 gold and a bundle of boost cards variety such as speed,defense and attack will be 40 gold coins. You could buy single boost cards with 10k silver.One last thing is that the boost cards can boost ur defense,attack,or speed by 50 like 120 speed + 50 from the boost cards equal 170 speed. I hope you like the suggestion.Sorry for the bad capitalization. this is my first post 
