20 games, only 4 times I could pick Quilboar?

Well, the title says it all? Have you put any restriction on Blizzard, because you think, you didn’t hit the balance right, or something else?

Please explain! Today, 7 games and I got 0 Quilboars! What is going on?

Not every lobby has each tribe in it.

Basically, 1 tribe being in your game is a coinflip.
And when coinflipping you can easily obtain the same result several time sin a row.
In 20 coinflips it’s totally possible that you’ll have only 4 heads and 16 tails

Perhaps that’s a sign that you can’t conpete without being “part of the Quillboar problem” in battlegrounds.
I’d tell you to adopt another strategy, but no other strategy leaves you with 286 health and 400 attack now, does it?
If only there were minions that had a guaranteed “kill the minion this attacks” effect regardless of its stats. If only there was a minion that makes aforementioned guaranteed kill minion have reborn. If only…

Also one of the surest ways to die in there, is to fixate on a tribe [from the start].

You pick a tribe to fixate only after early mid game.

And have ten thousand people do the coinflips, and the one person out of them who gets 4h/16t will come whine on a forum about it.