What happened to Petra?

It shows she is inactive?

replaced by akita

Petra has been benched and Akita is the replacement for her

she stole the ark of the covenant so the g2 is taking disciplinary action

kicked

Hearthstone player?

The team wanted to change roles, which meant someone else had to play smokes ( I forgot who) and Petra had to go to Duelist. They were a little skeptical about this role change so they trialed Petra on Duelist but it didnt work out. Hence the roster change. The coach put this on Twitter.