Secondary professions for a Paragon

Paragon/Warrior

 * "For Great Justice!" is an unlinked non-elite alternative to Focused Anger.
 * Shouts such as "Watch Yourself!" are effective for energy management and triggering echoes and "chorus" chants.
 * Combining Warrior shouts with Paragon chants can create extremely effective support.

Paragon/Ranger

 * Ranger's have far more, far better running skills than the Paragon. These skills can be combined with Paragon skills to create an effective running build that relies heavily on the secondary skills.

Paragon/Monk

 * Balthazar's Spirit is sometimes used on an Angelic Bond Paragon.

Paragon/Necromancer

 * A few Paragon skills inflict conditions on yourself; plague touch, plague sending, or plague signet can be used to transfer these conditions.

Paragon/Mesmer

 * Expel Hexes and Shatter Storm are often used in PvP.
 * Mirror of Disenchantment can be used in PvP to debuff Aegis or Conjures.

Paragon/Elementalist

 * Conjure Flame and other conjure spells can work well with a spear, certain skills that trigger or cause burning can also be synergistic
 * For example, Conjure Flame and Mark of Rodgort combined with a Fiery Spearhead causes almost constant burning. This also works well when combined with AoE Elementalists.
 * Shell Shock with Chest Thumper can also be used for a good combination. (Usually coordinated PVP)
 * Combining Shock with Awe creates an easy one-two combination leaving you able to decimate casters before they can sync into a rhythm. With the correct distribution of attribute points, dazed can be kept up indefinitely.

Paragon/Assassin

 * This profession combination is not useful for a Paragon Primary.

Paragon/Ritualist

 * A Ritualist hard res (Death Pact Signet or Flesh of My Flesh) may be preferred over the low heal and slower cast time of Signet of Return.
 * Vocal was Sogolon is an item spell designed particularly for Paragons, extending the length of shouts and chants.
 * Splinter Weapon is a weapon spell that can be effective with spear mastery based Paragons, causing splash damage to enemies surrounding the target foe, Brutal Weapon can be used to boost damage output (much like Conjure element for the P/E but without risk of disenchantment), and other weapon spells enhance the abilities of an offensive Paragon.

Paragon/Dervish

 * Combining Leadership, Chants & Shouts, and a Scythe can wreak havoc among mobs, although this works far better with a Primary Paragon supporting a Primary Dervish, a P/D and a P/X can pull this off fairly well.