So two (2) things that have become CLEAR to me with the design of "ARCH" is this:
A> The game must focus on defeating the OPPOSING BOSS unit/card.
B> If neither BOSS unit/card is defeated after three (3) Rounds, the BOSS with the MOST "HP" (Health Points) is the winning BOSS.
The gameplay is going to be simple:
1. Draw six (6) cards from your Ally Deck (leaving 10 cards for the other Rounds).
2. Choose ONE (1) Card from the six (6) to be the BOSS.
3. Each BOSS has exactly 10 or 15 HP (TBD with Playtesting which is better).