I had an idea for a mechanic they could add, hopefully this expansion. It’s called highlander. a card with highlander triggers an effect if it was the only copy of the card that started in your deck.
For Instance:
6 mana 6/7
lyonar legendary
Highlander: at the start of the match, if this card is in your deck, set your general’s health to 30. Whenever ANY minion is healed, restore 2 health to your hero.
Just an example to show off the concept. for this card, before the match starts, if you only put one copy of the card in your deck, you get the additional health for the game. otherwise it’s a potential healyonar engine on it’s own so you can include 3 of them if you want.

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