End of the month assuming no one gets sick.
Frenzy(Fever) Field monsters will be specific to that map. The orc ones will spawn in orc dungeon. The dragon ones will spawn over by abyss lake.
The testing npc has further items to increase drop rates.
Are you referring to the HE Bubble Gum that is 200% increase on drop chance? If so you really don't understand how low of a percent .05% - .06% is. Why would i want to farm thousands of monsters to gain 1 card on a test server when you need many? You either don't understand the time sink that is involved in gearing a character on Ragnarok or you don't understand just how low drop % are still, on the test server? Can we just get a server drop rate of 100,000, will solve most of the gearing issues without you needing to struggle bus a Card or Gear NPC in.