So Zendikar has this card:
Beastmaster Ascension 2G
Enchantment
Whenever a creature you control attacks, you may put a quest counter on Beastmaster Ascension.
As long as Beastmaster Ascension has seven or more quest counters on it, creatures you control get +5/+5
So kets say I attack with 5 creatures. Do I put 5 quest counters on Beastmaster Ascension (because 5 of my creatures attacked?) Or only 1 counter (because it was in a single combat turn so it counts as 1 event?)