Guild Wars 2

Incident: a 3v3 occurred in a bl and the fight was moving along until a warrior class on the opposing side utilized what looked to be a skill that 1)jumped in the air (similar to the warrior skill stomp) 2) slammed on the ground and 3) dazed in a aoe around him. This was all well and good but this exact same skill occurred 4 times in ~6 seconds.

Before this gets slammed, this occurred in wvw and this was looked into after the fact to draw reasonable suspicion, and since enemy players are effectively anonymous, there was no way to report this. All I am wondering is has anyone seen this before and is anyone able to shed light on this. [IE is this known issue?] Since the in-game mechanics prevented an official report from being conducted (due to verification that this was simply not a class mechanic that was not understood at the time, I would appreciate the mods showing some leniency on this matter. Thanks.

Image below is the tool tip found in the combat log after the fight. As there is no name on the skill it shows up as ‘[]’ in the log.

1. well immediately i can tell you that skill is from a thief, not a warrior. as far as i am aware there is no consumable that grants such skill. if there was a guardian with you, then i can assume it was a thief using this skill. as far as being able to use FOUR times in about 6 seconds no, that cant happen unless it was interrupted and u saw it channel multiple times, but any good thief will tell you they can steal from someone, save the steal skill untill steal is off cooldown, use the stolen skill, steal it again, and then use it again. so they could have possibly used it twice in a row and it might have been interrupted a couple times as u do have 3 people doing actions in the area.
https://wiki.guildwars2.com/wiki/Mace_Head_Crack
2. you can find out the other player in wvw, add them to block list, take note their account name, remove them from block list, whisper them and ask

tl;dr you mistook a thief for a warrior and you have a guardian in your group

I was with Saint. Every time the warrior did something we were stunned/dazed/ whatever you want to call it. I watched the warrior jump and stun my team mates, turn then do the exact same move and stun me as well. Same weapon.
I totally forgot about the headcrack, but the amount of time I Was not able to move just by the warrior alone was insane.

there is rampage, is has quiet a bit of interrupts, and has the animation you speak of where the warrior leaps into the air and lands and knocks people down.