You asked for Oz rings without the Tower of Oz, so they now drop from bosses, the same way they do in today's GMS.
Oz rings from bosses#
Bosses drop two kinds of ring box. Double-click one to spin for one of 30 skill rings.
Hidden Ring Box, ring level 1 to 3: 5% from Chaos Zakum, Hard Hilla, Chaos Pink Bean, each Chaos Root Abyss boss, Hard Magnus, Cygnus and Princess No, and 20% from Normal Lotus, Damien, Will, Gloom, Darknell, Guardian Angel Slime and Easy/Normal Lucid.
Shiny Ring Box, ring level 1 to 4: 20% from Hard Lotus, Damien, Lucid, Will, Darknell, Chaos Guardian Angel Slime and Verus Hilla, and almost always from Black Mage and Chosen Seren.
Chances are before your drop rate. Ring of Restraint, Risk Taker and each Weapon Jump ring are about 1.6% per box. The Tower of Oz still gives rings too. Full tables in the bossing guide.
Weekly bosses reset on Thursday#
Every weekly boss now unlocks for everyone at Thursday 00:00 UTC (Wednesday evening in the Americas), and Black Mage on the 1st of every month. Clearing late in the week no longer pushes your next run back. The cooldowns you already had moved to the next reset automatically.
Weekly commissions#
From level 190, One-Eye in Haven and Alchetto in the Dark World Tree camp hand out a weekly list of hunting commissions. A full week pays 20 
Diffusion-Line Energy Core (Grade A) or 20 
Faint Stigma Spirit Stone, exactly what Sensitive Squaroid and Quartermaster Sakaro take (with a Lotus or Damien drop) for an 
AbsoLab Coin or a 
Stigma Coin. New lists every Monday 00:00 UTC. Details in gear progression.
Drop cap#
After the drop rate, gear and coupons, an item's drop chance now stops at 87%. Mesos, quest items, Intense Power Crystals and Elite Medals of Honor keep their full chance. See Rates, burning maps & NX.