Falconer’s Circling skill reduces AoE Defense Ratio of enemies, it’s almost the same of you stacking A LOT of AoE Attack Ratio and hitting lots of enemies (great for farming and Hacka/Mergen skills, but better to watch some youtube videos for learning how it works).
Now if you want to ditch out the farming idea, the problem lies with Archer 3. It’s not a rank that many classes profit. I can imagine Cannoneer builds (because of Kneeling Shot sinergy), Falconer 3 builds (there’s a popular youtuber with A3-Sc2-Falc3 build doing very well) and Rogue 3 burrow focused builds, being all of them very underground and off meta.
As you are new to Archer patch, I can roughly resume as my PoV:
SR3 for AoE killing and Earth Tower easy setup;
Fletcher 3 + Mergen/Hacka for Bossing;
Scout 3 + Falconer 1 for dungeon farming;
Falconer 3 for support (Circling/Aiming) and field farming (Pre-emptive Strike);
Musketeer and Cannoneer used to shine a lot at PvP (before Missile Hole), now they are still good burst classes (Musk focused on single target and Cannon on AoE).

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