I've recently bought the 
in some games, and in every one of them the Ward became the Battlecast Ward
I don't own that ward skin I currently have the Poro Ward skin. Basic Wards, the normal Trinket Ward, and Sightstone Wards all use my skin, but the pink upgrade of the trinket changes it to Battlecast
I'm attaching an screenshot where I place a Sightstone ward (Poro) on the left, and use the ward on the right
(note the items in my inventory)
This is a known issue and we're working on a fix! Thanks for the report!
Huh...free ward skin!
Irrelevant but...
I love how people blur names but it's pretty easy to check who was in your recent matches, etc.
I use Battlecast, and get Victorious.
Sweet.
Mine turn into Amumu :3
Yeah I had the same bug earlier where mine became a Halloween ward skin.... was kinda happy inside but i knew it was wrong
yeah this happens with me i have the gentleman poro ward skin and with the pink ward trinket i get astro poro
It's also happening to me, but it's giving me the Mecha ward skin when I use the upgraded pink trinket. I have the Amumu ward skin activated.
