Duration: Mar. 1, 00:00 PST - Mar. 31, 23:59 PST

Elgifs:

• Imbued Tablet Elgif: Divine Oracle Lv. 3 (40000 points) - 20% boost to Atk, Def, Rec, max HP.
• Imbued Tablet Elgif: Destructive War Cry (40000 points) - Adds probability of normal attacks hitting all foes. (20% Chance AoE Normals (-50% ATK))

Spheres:

• Priced Mercy (20000 points) - 30% boost to Atk, Def, Rec, max HP, probable HP recovery when hit & slight HP recovery each turn (Non-Craftable)
• Thorn Crown (15000 points) - Boosts BB gauge every turn & slightly boosts BB gauge when damaged
  • Crafts into Phoenix Crown (for Nature Shield)
• Lament Blade (10000 points) - Boosts greatly Atk when HP is low (Non-Craftable)
  • Crafts into Skull General
• Death Axe (10000 points) - Boosts Critical Rate when HP is Full (Non-Craftable)
  • Crafts into Skull General
• Phoenix Orb (10000 points) -Largely boosts HP every turn & adds chance of HP recovery when damaged
  • Crafts into Phoenix Crown (for Nature Shield), Beiorg's Armor
• Guard Brace (10000 points) - Slightly boosts damage decrease with Guard & largely boosts BB gauge
  • Crafts into Illusion Gizmo (for Soul Armor)
• Magic Ore (10000 points) - BB gauge fills greatly after every turn (Non-Craftable)
• Origin Slate (8000 points) - Boosts damage by 25% to weaker elements
  • Crafts into Revelation Book, Demolishing Plate
• Hallow Sword (8000 points) - Boosts max HP and Atk by 35%
  • Crafts into Buffer Jewel
• Devil Shield (8000 points) - Boosts Def and Rec by 35%
  • Crafts into Buffer Jewel

Source: http://forums.gumi.sg/forum/news-boards/313926-special-exchange-hall-march-2017

IMO:

• Only Destructive War Cry elgif might be worth a thought to purchase.
  
• Might not need an extra Lament Blade or Death Axe since it was obtainable from last FH season.
  (Another sphere Wicked Blade is also needed for the crafting of Skull General.)