The Castbound is a Stage 10 fishing rod in Fisch, and its mastery adds a permanent upgrade plus an exclusive skin on top of an already powerful weapon. The mastery track opens once you own the rod and reach Level 1000, then asks you to finish three quests in order: Anger, Like a Boss, and The Journey’s End?
Quick answer: Catch 50 Fury fish, Perfect Catch 3 Rotbloom, and own Igneous Rupturer, Tidemourner, Verdant Oath, Wind Elemental, and Zeus’s Thundermaul. Finishing all three grants the Copperbound skin and a permanent Castbound enhancement.
Requirements before you start
You need the Castbound rod in your inventory and a character at Level 1000 or higher. The rod itself comes from The Guide questline at the Underground Music Venue, so the mastery is built for players who have already finished that grind. Equip the Castbound and open it in your inventory to view the mastery task menu and track progress on each objective.
Quest 1: Anger (catch 50 Fury fish)
The first task asks you to catch 50 fish carrying the Fury mutation. The Castbound applies Fury on its own through its bonus-fish passive, but the chance per catch is low, sitting around 25%, so this is a numbers grind more than a skill check.
Quest 2: Like a Boss (Perfect Catch 3 Rotbloom)
The second task requires three Rotbloom, and each one must be landed with a Perfect Catch using the Castbound. Catches that are not perfect do not count toward the total. Rotbloom is an Exotic-tier fish that spawns near the Toxic Grove only while a Rotbloom Hunt event is active, so watch the Global Event channel before heading out.
Quest 3: The Journey’s End? (own five rods)
The final task is a collection check rather than a fishing challenge. You simply need to own five specific rods at the same time. High-level grinders may already have all of them; everyone else will need to work through each rod’s own requirements, which is the most time-consuming part of the whole mastery.
| Rod | Main requirement |
|---|---|
| Igneous Rupturer | Reach Level 500, complete the Scoria Reach Bestiary, then talk to the Scoria Guard |
| Tidemourner | Craft using 3x Tide Essence, 5x Iron Chunk, 1x Tidemourner Head, and 1x Mourned Moonstone |
| Verdant Oath | Complete the Toxic Grove, Living Garden, and Nectar Den bestiaries, reach Level 1000, and spend 12,500,000 C$ |
| Wind Elemental | Reach Level 800 and complete the Wind Master’s quest |
| Zeus’s Thundermaul | Complete the Zeus’s Thunder of Chaos Bestiary, unlock the gate, and spend 18,750,000 C$ |
Once all five rods sit in your inventory together, the quest completes and the full mastery rewards unlock.
Mastery rewards
Each quest hands over its own prize, and clearing all three delivers the grand reward. The Copperbound skin is a reference to the True Copper Shortsword from Terraria, matching the rod’s Zenith-inspired design.
| Quest | Reward |
|---|---|
| Anger | Prisma Lantern |
| Like a Boss | Gemidium Bobber |
| The Journey’s End? | Castbound enhancement (below) |
| Grand reward (all quests) | Copperbound skin |
The permanent enhancement applied to the Castbound is +200 Durability, 3 More Chances, +50% Slash Rate, and a Perfect Casts bonus that adds +25% Fury Base Chance and +5 Starting Progress. This directly strengthens the rod’s slash passive and its Fury mutation rate, making the mastery a worthwhile long-term upgrade if the Castbound is your main rod.
How to confirm completion
Open the Castbound in your inventory and check the mastery task menu. Each objective shows a completed status as you turn it in, and the cosmetic rewards drop into your inventory after Anger and Like a Boss. After The Journey’s End? registers all five rods, the enhancement attaches to the Castbound and the Copperbound skin becomes available to equip. If a quest is not advancing, the usual cause is a missed condition. Fury catches must come from the Castbound’s own passive, Rotbloom only count on a Perfect Catch, and all five rods must be held at once for the final step to clear.
Plan for roughly one to seven days overall. The first two quests can usually be wrapped up in a day, while assembling the five rods is the bottleneck, since several of them are full questlines in their own right.
