I get that there is unique cards, like allies, and there are other cards that come x1 in the core, but can i build my deck with several copies coming from several cores? (Asking for "ancestral knowledge" especificaly, and posible combos or strategies with 3 of it)

I ask because the coreplay says you must use every hero card if i got it right

22 hours ago, Prandoom said:

I get that there is unique cards, like allies, and there are other cards that come x1 in the core, but can i build my deck with several copies coming from several cores? (Asking for "ancestral knowledge" especificaly, and posible combos or strategies with 3 of it)

I ask because the coreplay says you must use every hero card if i got it right

No.