Compositions 101
What do we pick?
There're many ways to build a composition; you can focus on a stage of the game (early, late), you can focus on a role or champion (adc, fiora) you can focus on a strenght (1-4 splitpush, siege, dive), and you can also combine many of this factors to build an overall strong teamcomp. Yet you've to have in mind that a teamcomp that has strenghts, will also have weaknesses.
Knowing that we can orient our composition in different ways, let's better aim on what a teamcomp needs to be balanced; identifying the tasks that need to be present on a teamcomp and who better fits each role.