A deck can contain enough damage and Block to win a long fight and still lose before those cards work together. Inspect the opening turns separately from the eventual engine. The practical question is whether the deck can survive while finding and playing its important cards.

Missing cards and late draws

If no card or potion can handle the enemy’s dangerous turn, the problem is coverage. More draw only finds different versions of the same missing answer. If the correct defense exists but repeatedly arrives late, the problem is access.

As a simplified probability example, one particular card in a shuffled 20-card deck has a 25% chance to appear in a five-card opening hand. That assumes an ordinary uniform shuffle, no guaranteed starting cards, and no extra draw. It is not a prediction for every character or relic setup. Merely owning one defensive card does not make it available on turn one.

Adding another usable answer can be better than adding another payoff that needs the same setup. It may also be better than removing a starter when the deck is still missing a whole function. Reassess the removal decision using the encounter that actually causes trouble.

Draw and Energy shortages

Bag of Preparation draws two additional cards at combat start. Lantern adds energy at combat start. One improves access; the other improves what you can play. Extra energy does little when the hand lacks an answer, while extra draw can leave several expensive cards competing for the same resources.

Anchor supplies 10 opening Block. Boot Sequence is an Innate, Exhausting defensive card. These can bridge an early setup turn, but they do not replace sustained defense later in the fight. Account for their timing instead of adding their value to every turn.

Draw restrictions and play order

Battle Trance draws cards for zero energy but then prevents further draws that turn. When other draw is available, decide its order before playing Trance. Finding an Acrobatics-like effect afterward does not mean it will still draw.

Hologram returns a card from the discard pile to hand. It can retrieve an answer already used or discarded, but it cannot select a card still buried in the draw pile. Acrobatics reaches new cards but costs energy. Read which pile and resource each effect actually uses.

Review generated statuses

Cards that accelerate a deck while adding statuses create a later access problem. Check whether the deck can exhaust, discard or draw past those statuses without spending all its playable resources. The Steam Defect discussion describes otherwise promising runs struggling when long fights fill hands with Burns and Wounds.

After a loss, identify the first turn where the deck needed an answer, what was available, and which earlier reward could have improved that turn. Keep the engine’s damage potential separate from the resources required to reach it.