Other reliable sources of Cold Looks (or Rare Catalysts in general) include Side Story Events and your Guild, which allows you to request Catalysts and purchase Catalyst Chests for Guild currency.
Source #1: Unrecorded History Stage 1-3 Dead Shadow Lake (Best Source)
Stage 4-6 The best place to farm for Cold Looks, since you can only receive one other Catalyst as a drop here. So it’s very likely you’ll be able to stack a lot of Cold Looks quite fast!
You can purchase Cold Looks in the AP Exchange Shop. You can buy up to 10 of them per weekly reset for 120 AP each. ..
When farming Stage 1-3, bring along Pets that can boost your AP acquisition rate. This will maximize your AP farming potential and help you get the most out of your rewards.
Source #2: Events
Events are a great way to earn resources and materials for free, or to buy them from the Exchange Shop. ..
There are always Catalysts available in Event Exchange Shops. So make sure you participate in every event to farm all the Catalysts you need.
There are Pets that can boost your acquisition rate for event currency, so make sure to bring them along while farming.
Source #3: Guild Member Shop
The Guild Member Shop is a reliable source of Catalyst Chests. ..
You can buy up to 5 Rare Catalyst Chests and 3 Catalyst Chests here every week, and doing so isn’t particularly hard. The challenge comes in finding them.
Donating money each day will help you accumulate enough currency to purchase all of the available Catalyst Chests. ..
Source #4: Guild Aid
Guilds are a great way to connect with other players and get help with tasks. The Guild Aid system lets you request materials from your guildmates, which can be helpful in completing tasks. ..
If you need Cold Looks or Rare Catalysts, you can request up to two of them per day.
Don’t forget to pay it forward and donate some of your own Catalysts! Your guildmates will feel more inclined to donate to you in the future if you’re not just leeching off of them. ..