Command Cards

Command cards are used to attack enemies during battle. There are three different types: Quick, Arts, and Buster. Five of these are chosen at random from your Command Deck, and you are allowed to use three of these during each Command Phase.

Chains
Quick, Arts, and Buster chains occur when 3 of that card type are selected. Brave Chains occur when 3 cards are chosen that belong to the same servant.
 * Quick Chain - Gain 10 Crit Stars for the next Command Phase.
 * Arts Chain - Increases NP Gauge by 20% for servants in the chain.
 * Buster Chain - Attacks do 20% bonus damage this turn.
 * Brave Chain - Perform an additional attack for 200% bonus damage, or 350% if it's also a Quick, Arts, or Buster chain.

First Card Bonus
The first Command Card you choose gives all cards a bonus depending on type.
 * Quick - Bonus 20% to crit star rate.
 * Arts - Bonus 100% to NP gauge rate.
 * Buster - Bonus 20% to Damage