Just in general Mirage's ult is so hard to use quickly because not only are the character portraits weirdly hard to click by themselves, but if a character is near a walker, it's basically impossible to click them. It doesn't even make sense why the towers are clickable while using the ult at...
someone said on reddit that it might be (technically) an intended mechanic due to the fact that Grey Talon was the only one on their team alive when the urn was delivered, and apparently if you're not alive you don't get the full urn amount, and so the souls that the teammates would have got all...
match ID: 25770722
Don't have much context besides the video. Just started stealing the souls from an urn the enemy delivered and they just kept on coming.