How long is Attacking creature "attacking creature" ? Until end of combat step ?
Once the second main phase starts, creatures are no longer "attacking creatures"
508.1j [An attacking creature] remains an attacking creature until it’s removed from combat or the combat phase ends, whichever comes first. See rule 506.4.
If I steal a hundred dollar from a loot of one thousand, people might notice;
If I steal a hundred dollar from a loot of one million, I might get away with it;
If I wish to steal even more and still go unnoticed, I need to make the loot bigger.
Now you know why taxes always go up.
Looting: ''the plundering of public assets by corrupt or greedy authorities'' (Wikipedia)