For purposes of [[Zurgo Stormrender]], once a creature becomes an attacking creature, it remains an attacking creature for the rest of the combat phase (even after it has dealt combat damage and even during the end of combat step) unless it's removed from combat (C.R. 506.4, 511.3; see also C.R. 508.1k).


(At the end of the process for declaring attackers.) 508.1k Each chosen creature still controlled by the active player becomes an attacking creature. It remains an attacking creature until it’s removed from combat or the combat phase ends, whichever comes first. See rule 506.4.

511. End of Combat Step

511.1. The end of combat step has no turn-based actions. Once it begins, the active player gets priority. (See rule 117, “Timing and Priority.”)

511.2. Abilities that trigger “at end of combat” trigger as the end of combat step begins. Effects that last “until end of combat” expire at the end of the combat phase.

511.3. As soon as the end of combat step ends, all creatures, battles, and planeswalkers are removed from combat. After the end of combat step ends, the combat phase is over and the postcombat main phase begins (see rule 505).