This is the body, shield and base of Isengar / Mordor Troll (https://www.games-workshop.com/es-ES/Mordor-Troll-2018).
The box, that you can buy, only give one body and base, If you use this parts you can made 3 differents trolls instead of one because the box has 3 heads and 3 arms'pairs .
You can dowload the version with boots, the shield and base in thingiverse. (thingiverse.com/thing:3730924/files)