Re: So basically Catalyst's ult is a buff for an enemy Seer?

Here’s what probably happened with the Catalyst anti-scan ability (of course just speculating). In a leaked patch notes, it said that Catalyst’s ult would block scans. This is probably the ability description that the external company got when they were making the trailer. These CGI trailers are not made in just a week or two. 

Catalyst also had a quick change of all of her abilities. Just this February, they leaked Catalyst with a completely different set of abilities. The development time with this legend might have been rough with all these short-notice changes.