On any "support" (any champion really) you can have 2 ZZ´rot portals active for a short while, as long as you build Ruby sighstone which gives cooldown on activatable items. Since the changes last patch to ZZ´rot portal, the cooldown now allows any player to have 2 active portals placed.
Not sure if this is intentional or not, but I noticed it when I played Thresh and got the item, so I placed them in my base to show them side by side.
All you need to do is;
1. Get RubySighstone on any champion
2. Get ZZ´rot Portal
3. Now all you need to do is place the first one, wait for the cooldown and place the second one.
There will only be a short while the first one stays active after the second one is placed, but they will both work. This has happened every game I´ve played since I noticed it, also tried 2 Custom games and changed champion/ skins and masteries. It still ends with the same result, as far as I have seen and tested it. It works on any champion if you get RubySighstone + ZZ´rot Portal, no matter what other build or masteries you run.