What aer the The speed

What are the speed power and attack boost things for you get out of the supply drops used for and where are they located app

Those are stat boosts. If you collect a hundred of a type you can use them to boost that stats of one of your creatures.

Boosts: you can get them from daily battle incubators, event(green) supply drops, the market, and I believe the free and pvp incubators. As well as the 3 strike event battles spread across the week. And I forgot by how much the boosts increase health and attack but speed boosts give you creature 2 extra speed.