How does Data Raven gain Hosted Power Counters to use its ability?

At a guess? Through some other text on Data Raven.

There's only 7 lines of text on the card, let's see: "Trace(3) - If successful, place 1 power counter on Data Raven."

haha youre right!

and we were playing it that you had to advance it to get the counter!

Well Ill tell my friends <3