Star Magician | Golden Sun: The Lost Age | 100% Walkthrough (

In this part, we head north of Lemuria to reach Treasure Isle and defeat the first of four super bosses, the Star Magician.
Collectibles: 14
1. 161 Coins (Treasure Isle Early Area, Chest) - 2:27
2. Lucky Medal (Treasure Isle Early Area, Chest) - 2:33
3. Jester's Armlet (Treasure Isle Early Area, Chest) - 5:18
4. Mimic #9 of 9 (Treasure Isle Early Area, drops Power Bread) - 6:50
5. Star Dust (Treasure Isle Early Area, Chest) - 8:57
6. Rusty Axe (Treasure Isle Early Area, Chest, forges into the Viking Axe) - 9:03
7. Sylph Feather (Treasure Isle Early Area, Chest) - 9:09
8. 911 Coins (Treasure Isle Early Area, Chest) - 9:15
9. Psy Crystal (Treasure Isle Early Area, Chest) - 9:20
10. Cookie (Treasure Isle Early Area, Chest) - 9:26
11. Iris Robe (Treasure Isle Late Area, Chest) - 10:49
12. Fire Brand (Treasure Isle Late Area, Chest) - 12:41
13. Gale (70 of 72 Djinn) - 14:12
14. Azul - 41:48
Boss: Star Magician
HP: 7,486
Weakness: Fire
Star Magician's Attacks:
Mystic Call (Common) - A Skill that activates when less than four "Ball" minions are in battle. This Skill summons another randomly chosen "Ball" minion.
Mine Ball (Common) - A Skill that hits all party members for a moderate amount of Water-Based damage.
Spark Plasma (Uncommon) - A Psynergy Spell that hits all party members for a heavy amount of Wind-Based Damage.
Megacool (Uncommon) - A Psynergy Spell that hits all party members for a heavy amount of Water-Based damage.
Attack (Uncommon) - A standard physical attack.
Boss: Thunder Ball
HP: 280
Weakness: Earth
Thunder Ball's Attacks:
Attack (Common) - A standard physical attack on one party member.
Flash Bolt (Common) - A Psynergy Spell that hits three party members for a minor amount of Wind-Based damage.
Storm Ray (Common) - A Psynergy Spell that hits three party members for a minor amount of Wind-Based damage.
Shine Plasma (Common) - A Psynergy Spell that hits all party members for a moderate amount of Wind-Based damage.
Boss: Refresh Ball
HP: 360
Weakness: Fire
Refresh Ball's Attacks:
Attack (Common) - A standard physical attack on one party member.
Earnest Ply (Common) - A Psynergy Spell that heals Star Magician for roughly 1,000 HP.
Cure Poison (Common) - A Psynergy Spell that cures Star Magician of Poison or Venom.
Restore (Common) - A Psynergy Spell that cures Star Magician of Sleep, Stun, Delusion, and Death Curse.
Boss: Guardian Ball
HP: 520
Weakness: Wind
Guardian Ball's Attacks:
Guard Aura (Common) - A Skill that puts a barrier on Star Magician and causes all damage done to be only 5% of what it would have been.
Defend (Common) - A Skill that causes any damage done to the user to drop to 50%.
Boss: Anger Ball
HP: 460
Weakness: Water
Anger Ball's Attacks:
Attack (Common) - A standard physical attack on one party member.
Angry Mine (Common) - A Skill that causes the user to self-destruct and deal heavy Earth-Based damage to three party members.
---------Additional Info---------
- Treasure Isle is a unique location as we have the option to visit it twice or all at once. The first area is available earlier on at lower levels and consists of weaker enemies and mostly looted chests. The late area is only available after uniting with Isaac's Party as we need the Lift Psynergy to get in.
- Treasure Isle Monsters (Early Area): Cannibal Ghoul (Not Encountered), Earth Golem (2:44), Harridan (Not Encountered), Horned Ghost (Not Encountered), Mimic (Only One, 6:50), Stone Soldier (2:44), Turtle Dragon (Not Encountered).
- Treasure Isle Monsters (Late Area): Gillman Lord (Not Encountered), Great Seagull (11:20), Jupiter Djinni Gale (Only One, 14:12), Ocean Dragon (11:58), Puppet Warrior (16:54), Pyrodra (11:20), Sea Hedgehog (13:31), Boss: Star Magician & Thunder Ball & Refresh Ball & Guardian Ball & Anger Ball (18:02).
- Treasure Isle Monster Drops (Early Area): Cannibal Ghoul (Antidote, Uncommon), Earth Golem (Giant Axe, Rare), Harridan (Nut, Uncommon), Horned Ghost (Elixir, Uncommon), Mimic (Power Bread, Guaranteed), Stone Soldier (Elixir, Uncommon), Turtle Dragon (Blessed Mace, Rare).
- Treasure Isle Monster Drops (Late Area): Gillman Lord (Tear Stone, Uncommon), Great Seagull (Sylph Feather, Uncommon), Ocean Dragon (Triton's Ward, Rare), Puppet Warrior (Psy Crystal, Uncommon), Pyrodra (Salamander Tail, Uncommon), Sea Hedgehog (Potion, Uncommon), Boss: Star Magician & Thunder Ball & Refresh Ball & Guardian Ball & Anger Ball (None).
- As mentioned above, Treasure Isle is the first location where we can begin to farm rare forgeable materials. These consist of Tear Stones, Slyph Feathers, and Salamander Tails. The other forgeable items will be located in the other super boss locations in future videos. As these drops are uncommon or rare, you'll either have to get lucky, or follow the RNG guides found on other websites (these are way too complicated for me to post here, sorry!).

[@veghesther3204]

I'll still summon rush it to death but before doing so any Dijinni that can trigger BEFORE the Guard ball's aura skill triggers should be used to hit the Guard balls immediately ie ground/petra etc else even summon damage will be reduced by 90% less so you need your summons to do the FULL damage by making sure Guard aura ISN'T used on its first turn.