From ggFTW Trickster Wiki

Here are a full list of party quests with Chaos's Feather(s) only (sorting from lowest minimal Lv condition to highest minimal):

Level 25+

		NPC: Officer Tera			Location: Paradise Monster Guild
		Monster: Rotten Mummy (Lv.43)			Condition: Level 25+, all party members must be in Paradise Monster Guild.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	64x	in 20 min	Chaos's Feather 20	~ / ~
		3	96x
		4	128x
		5	160x
		6	192x
		Found at:
		Rotten Mummy is found at Pyramid Dungeon 4 / 5 / 6.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 30+

		NPC: Officer Tera			Location: Gate of Poppuri Dungeon
		Monster: Moss Moth (Lv.48)			Condition: Level 30+, all party members must be in Gate of Poppuri Dungeon.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	76x	in 20 min	4x 500 Galder Coupon or Chaos's Feather 35	~ / ~
		3	114x
		4	152x
		5	190x
		6	228x
		Found at:
		Moss Moth is found at Poppuri Dungeon - Rainbow Cave and Poppuri Dungeon - Moss Cave.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 55+

		NPC: Officer Tera			Location: Azteca Monster Guild
		Monster: Naranjo (Lv.84)			Condition: Level 55+, all party members must be in Azteca Monster Guild.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	60x	in 20 min	Chaos's Feather 50	~ / ~
		3	90x
		4	120x
		5	150x
		6	180x
		Found at:
		Naranjo is found at Caballa Relics Dungeon 3 and 4.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 60+

		NPC: Officer Tera			Location: Gate of Oops Wharf
		Monster: Crow (Lv.88)			Condition: Level 60+, all party members must be in Gate of Oops Wharf.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	48x	in 20 min	6x 500 Galder Coupon, Chaos's Feather 65	~ / ~
		3	72x
		4	96x
		5	120x
		6	144x
		Found at:
		Crow is found at Wharf Field 2 - Devil Crow and Wharf Field 3 - Phantom Park.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 75+

		NPC: Officer Tera			Location: Gate of Mermaid Dungeon
		Monster: Okto (Lv.129)			Condition: Level 75+, all party members must be in Gate of Mermaid Dungeon.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	38x	in 20 min	1x Chaos's Feather 80	~ / ~
		3	57x
		4	76x
		5	95x
		6	114x
		Found at:
		Okto is found at Mermaid Dungeon 2 - Legend of the Sea.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 100+

		NPC: Officer Tera			Location: Aquarius Monster Guild
		Monster: Nora Mummy (Lv.132)			Condition: Level 100+, all party members must be in Aquarius Monster Guild.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	90x	in 20 min	Chaos's Feather 110	~ / ~
		3	135x
		4	180x
		5	225x
		6	270x
		Found at:
		Nora Mummy is found at Nora Sewer.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 120~149

		NPC: Officer Tera			Location: Desert Beach Mine - Crystal Copper
		Monster: Kira (Lv.180)			Condition: Level 120~149, all party members must be in Desert Beach Mine - Crystal Copper.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	8x	in 10 min	10,000 Galder Coupon, 3x Chaos's Feather 95, 3x Chaos's Feather 110, or 3x Chaos's Feather 125	~ / ~
		3	12x
		4	16x
		5	20x
		6	24x
		Found at:
		Kira is found at 2nd Closed Lot of Crystal Copper.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 125+

		NPC: Officer Tera			Location: Gate of Vamp Castle
		Monster: Maid Lydia (Lv.185)			Condition: Level 125+, all party members must be in Gate of Vamp Castle.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	88x	in 20 min	Chaos's Feather 125	~ / ~
		3	132x
		4	176x
		5	220x
		6	264x
		Found at:
		Maid Lydia is found at Vamp Dungeon 1 / 2.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 150~179

		NPC: Officer Tera			Location: Caballa Relics Mine - Jade Steel
		Monster: Leprechaun (Lv.225)			Condition: Level 150~179, all party members must be in Caballa Relics Mine - Jade Steel.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	8x	in 10 min	2x 10,000 Galder Coupon or 3x Chaos's Feather 140 or 3x Chaos's Feather 155 or 3x Chaos's Feather 170	~ / ~
		3	12x
		4	16x
		5	20x
		6	24x
		Found at:
		Leprechaun is found at 2nd Closed Lot of Jade Steel.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 160+

		NPC: Officer Tera			Location: Snow Hill Gift Factory
		Monster: Ice Cream (Lv.220)			Condition: Level 160+, all party members must be in Snow Hill Gift Factory.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	96x	in 20 min	500 Galder Coupon or Chaos's Feather 155	~ / ~
		3	144x
		4	192x
		5	240x
		6	288x
		Found at:
		Ice Cream is found at Snow Field 3 - Stairway of Snowflake.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

		NPC: Officer Tera			Location: Gate of Blue Ice Dungeon
		Monster: Great Coolem (Lv.280)			Condition: Level 160+, all party members must be in Gate of Blue Ice Dungeon.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	58x	in 20 min	Chaos's Feather 170	~ / ~
		3	87x
		4	116x
		5	145x
		6	174x
		Found at:
		Great Coolem is found at Ice Dungeon 3 / 4.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 180~199

		NPC: Officer Tera			Location: Swamp Mine - Silver Jewel
		Monster: Guard Mon (Lv.270)			Condition: Level 180~199, all party members must be in Swamp Mine - Silver Jewel.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	8x	in 10 min	3x 10,000 Galder Coupon, 3x Chaos's Feather 185, or 3x Chaos's Feather 200, or 3x Chaos's Feather 215	~ / ~
		3	12x
		4	16x
		5	20x
		6	24x
		Found at:
		Guard Mon is found at 2nd Closed Lot of Silver Jewel.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 200+

		NPC: Officer Tera			Location: Snow Hill Mine - Precious Jewel
		Monster: Guard Ian (Lv.320)			Condition: Level 200+, all party members must be in Snow Hill Mine - Precious Jewel.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	8x	in 10 min	10,000 Galder Coupon or 3x Chaos's Feather 230 or 3x Chaos's Feather 245 or 3x Chaos's Feather 260	~ / ~
		3	12x
		4	16x
		5	20x
		6	24x
		Found at:
		Guard Ian is found at 2nd Closed Lot of Precious Jewel.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 230+

		NPC: Officer Tera			Location: Techichi Volcano - Golden Ash
		Monster: Allionette (Lv.350)			Condition: Level 230+, all party members must be in Techichi Volcano - Golden Ash.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	8x	in 10 min	10,000 Galder Coupon or 3x Chaos's Feather 275 or 3x Chaos's Feather 290 or 3x Chaos's Feather 305	~ / ~
		3	12x
		4	16x
		5	20x
		6	24x
		Found at:
		Allionette is found at Golden Ash Closed Lot 2.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page

Level 260+

		NPC: Officer Tera			Location: Tapasco Mine - Silent Lava
		Monster: Fire Hand (Lv.380)			Condition: Level 260+, all party members must be in Tapasco Mine - Silent Lava.
		Party Members	Amount of Monsters	Time	Reward	Base / TM
		2	8x	in 10 min	4x 10,000 Galder Coupon or 3x Chaos's Feather 320 or 3x Chaos's Feather 335 or 3x Chaos's Feather 350	~ / ~
		3	12x
		4	16x
		5	20x
		6	24x
		Found at:
		Fire Hand is found at 2nd Closed Lot of Silent Lava.
		Notes: Amount of experience fluctuates (depends mostly on the number of kills).
		Top of Page