Feyd-Rautha Harkonnen

Feyd-Rautha Harkonnen, the na-Baron and arena duelist, hones himself all game. His passive, Devious Strength, converts espionage into violence: once per Reveal turn, recall a Spy for 2 swords. His Signet Ring, Personal Training, advances his token along a personal Training track, collecting each space's reward — card-trashing, Spy placements, spice, and finally a troop-and-Spy finisher. The track ends; after that the ring does nothing.

The result is the game's best self-improvement arc: a deck trimmed lean by training, spies that double as sword steel, and combat totals that keep surprising the table.

Sprint the Training track in the first half: the trashes strip Convincing Arguments and Diplomacy from your deck so every later hand is denser with swords, icons, and Persuasion. From mid-game on, Devious Strength means your visible army always understates you by 2 — the winning margin in an astonishing number of Conflicts.

Win through combat: rewards, battle-icon pairs, and the tempo of a deck that draws its best cards twice as often as anyone's.

• Signet early, signet often — the Training track is front-loaded value and finite; finishing it by mid-game maximizes the trimmed-deck rounds
• Trash ruthlessly — cut the weakest starting cards first; a 7-card core deck cycles your bombs every other turn
• Keep one Spy as ammunition — a posted Spy is a standing +2 swords; rivals must price it into every battle against you, even when you don't spend it
• Replant after the strike — spend Spy icons (and the track's placements) to reload the post you burned for swords