ルーンの杖 / ルーンのつえ [rune no tsue] or 'rune staff' in Japanese.
Final Fantasy I
Stats: ATK +25, ACC +25
Equip: ?
Drop: Orthros, Tiamat
Description: A staff that casts Healara when used
Final Fantasy III

Stats: ATK 33, ACC 80, MND +4, weight 0, casts Erase
Use: ONK, WHM, RDM, EVO, DEV, SMN, SAG
Buy: 18,000 gil (sell: ? gil)
Shop: Saronia NE
Type: Staff
Final Fantasy IV
Stats: ATK 42, ACC 80, MND +10
Equip: Fusoya, Rosa
Buy: - (sell: 7,500 gil)
Drop: Marionetteer, Sorcerer, Summoner
Other: 1.5x damage to mages, may silence the opponent
Other: casts Silence when used in battle
Crystal Chronicles
Stats: MAG +1
Obtain: Moschet Manor, cycle 1
Other: an Artifact
Airborne Brigade

SSR
Type: Staff, Element: -, Growth: Slow, Cost: 31
Attack: 11,290 (lv1), 35,469 (lv200)
Defense: 11,360 (lv1), 35,688 (lv200)
Obtain: after Shattered World and Showdown, level Onion Knight ally to 99
All the Bravest
Stats: ATK +5, From: FF3
Equip: White Mage, Devout, Sage, Rydia, Krile Maia Baldesion, Eiko Carol, Yuna
Drop: Exdeath
Description: Carved into this staff is the most lovely poetry ever. Too bad you can't read it.
Mobius

Rune Staff
Stats: ATK +10, Break +10, MAG +20%
Auto Abilities: Water Element appearance rate up
Obtain: Mage job card skill panel #1
Cost to obtain: 1 Crystal
Type: Mage Weapon, Rarity: ★
Other: ルーンスタッフ [rune staff] in Japanese, so is slightly different from the other weapons on this page
Rune Staff+
Stats: ATK +18, Break +15, MAG +30%, SPD ★
Auto Abilities: Water Element appearance rate up
Obtain: from Rune Staff with Mage skill panel #2
Cost to obtain: 2 Crystal
Type: Mage Weapon, Rarity: ★★
Other: ルーンスタッフ+ in Japanese
Rune Staff+2
Stats: ATK +26, Break +20, MAG +40%, SPD ★
Auto Abilities: Water Element appearance rate up
Obtain: from Rune Staff+ with Mage skill panel #3
Cost to obtain: 3 Crystal
Type: Mage Weapon, Rarity: ★★★
Other: ルーンスタッフ改 in Japanese
True Rune Staff
Stats: ATK +34, Break +25, MAG +50%, SPD ★
Auto Abilities: Water Element appearance rate up
Obtain: from Rune Staff+2 with Mage skill panel #4
Cost to obtain: 60,000 Water Seed
Type: Mage Weapon, Rarity: ★★★★
Other: 真ルーンスタッフ in Japanese
Record Keeper

Rune Staff
Stats: ATK +23, ACC 95, MAG +51, MND +54 (lv1), ? (lv5), ? (lv10), ? (lv15), ? (lv20), ? (lv25), ATK +38, ACC 95, MAG +76, MND +104 (lv30)
Max Level: lv20 (initial), lv25 (first evolve), lv30 (second evolve)
Type: Staff, Rarity: ★★★★★
Other: enables use of the Light of Prayer Soul Break when equipped by White Mage
Other: receives Job resonance boost

Rune Staff (IV)
Stats: ATK +7, MAG +14, MND +22, ACC 89 (lv1), ? (lv5), ? (lv10), ? (lv15), ATK +16, MAG +30, MND +53, ACC 89 (lv20)
Max Level: 10 (initial), 15 (first evolve), 20 (second evolve)
Type: Staff, Rarity: ★★★
Category: Equipment