The third-age druidic robe is the bottom part of the robe for the Third-age prayer set. It requires 65 Prayer and Defence to wear. It is currently the only third-age leg-slot item to offer a prayer bonus.
A livestream with Mod Simon and James revealed the mechanics of Treasure Trail rewards in detail[1], meaning the actual chances could be calculated: approximately 1 in 37,128 per item roll for any of the 5 parts of third-age druidic, or approximately 1 in 185,640 for a specific part, per item roll - with an average of 5 item rewards per Trail, this gives approximately 1 in 7,426 for any part, or 1 in 37,128 for a specific part, per Trail completed. For a more detailed breakdown of drop mechanics and calculations, see Treasure Trails/Rewards#Elite.
65 
Magic
Life points
0
0
0
Ancient components
Cover parts
Magic parts
Deflecting parts
Powerful components
Protective components
Hat
Top
Bottom
Amulet
Coif
Top
Legs
Vambraces
Wreath
Top
Bottom
Cloak
Staff
Dagon'hai (Necromancer)
Skeletal
Lunar
Subjugation
Zuriel's (Corrupt • Superior)
Anima Core of Seren (Refined)
Virtus
Tectonic (Elite)
Ahrim's (Golden)
Combat
Druidic mage
Sacred clay
Battle
Infinity
Dragonbone
Starfire
Starfury
