spammer type start of the game w/o costing to much of gold.. empty bottle chicken then upgrade it to crow every time ur bottle is empty, use ur crow to refill it in ur base. the good thing here is that not only ur SP regen, but also ur HP and also ur crow can be so useful when buying items. you can also use ur crow to steal aegis when opponent is starting kill the roshan. it has an invulnerable skill which allow u to freely steal their aegis. they can't stop it w/ magic or attack it if its in invu state.