Watching the covenant video to learn how to play, they break a province and discard the card on it.

But then the next province breaks and they leave the card there.

Was a step missed or is it only once it something?

You "may" discard the card in the province (RR-Step 3.2.5). They probably just forgot.

They mention in the Dragon vs. Unicorn episode that discarding the card is only optional. So I'd say they just missed the opportunity.

Gotcha. Who decides? The breaker or the breakee?

Just now, Velvetelvis said:

Gotcha. Who decides? The breaker or the breakee?

Attacker

Thank you.

As a general rule, don't discard a face-down card when playing against Lion or anyone running a Keeper Role... you essentially just provide them with more usable cards in their discard pile.

7 minutes ago, Hinomura said:

As a general rule, don't discard a face-down card when playing against Lion or anyone running a Keeper Role... you essentially just provide them with more usable cards in their discard pile.

Also Unicorn because of cavalry reserves.

Absolutely! I kinda keep forgetting Unicorn are a thing...