Bluetracker
Tracks Blizzard employees across various accounts.
For anyone that's like me and didn't know how the CHALLENGER keyword works...
... when you play a card with Challenger you're supposed to DRAG the opponents card to "lane" of your card.
I was clicking on the enemy cards and it took me a while to read the bloody text that says "drag..."
fizznchips
Another point that I didn't get straight away: you can challenge elusive units! Take that, Teemo.