The boss rule is the fight
A boss is more than a bigger enemy. It brings a special rule that changes how the battle works. That rule, more than its stats, decides whether your deck succeeds.
Players who lose to bosses usually fought the stats and ignored the rule. The stats are a wall. The rule is the door, and you need the right key.
Read before you draft
When you see the boss ahead, stop and read its rule. Does it add floors? Does it punish a card type? Does it shield itself? Name the problem in one sentence before you draft another card.
Then draft toward the answer. If the rule punishes units, lean on spells. If it adds floors, deepen your defense. The draft after you read the boss matters most.
Answer, do not outscale
The common failure is trying to outscale the boss. You pile on power and still lose because the rule ignores power. A targeted answer beats a bigger number every time.
A single card that neutralizes the rule often does more than three cards that add stats. Look for the key, not the hammer.
Keep your plan intact
Adjust, but do not rebuild. A full rebuild loses the deck you know how to pilot. Make the smallest change that answers the rule, then trust your existing plan to do the rest.
The upgrade strategy page helps you spend late points on the boss answer instead of spreading them thin.
Practice the read
The skill is repetition. Each boss teaches you to read first and draft second. After a few, the habit sticks and boss losses drop without any single trick.
Next: Endless mode.