Warpball
Warpball is an uncommon throwable item.
Sounds like a name of a sports game. A neat pet ball.
Sources
Can be bought from merchants:
Can be obtained via 
Spawnable Item Pack or 
Technical Information
- In-game ID:
ct_alta_toy_warpball - Power:
2.5 - Rarity:
Uncommon - File:
/items/throwables/toys/ct_alta_toy_warpball.thrownitem