Necrobinder wins by converting setup into overwhelming board value. The trap is spending too many turns preparing while enemies attack freely.
Protect the setup turn
If a card asks you to spend a turn preparing, make sure the deck has block, weak, or a potion to cover that turn.
Value engines need payoff density
Summon and sacrifice packages get stronger when there are enough payoffs. A single payoff in a deck full of filler will feel inconsistent.
Keep one simple kill plan
Even synergy decks need a straightforward way to end fights. Do not rely only on a long chain that fails when one piece is missing.