鼠鼠

• Every 3.3s: deal 5 effect damage
• Every 3.3s: 75% chance to apply Poison 1
• Pet category: eligible for Big Bowl of Treats 20% double activation

Poison is Backpack Battles' unique DoT: at stack X, the current second deals X damage, the next second X-1, decaying triangularly. Poison 10 stacks totals 10+9+8+...+1 = 55 damage, and 20 stacks reach 210 damage — powerful sustained damage. Rat's 75% Poison 1 application accumulates to around 20-30 stacks in long matches, producing extreme late-match effective damage.

Rat is a Ranger-exclusive Common pet specializing in DoT — a unit that auto-attacks every 3.3s, dealing damage + Poison. Its biggest strength is "attacks independent of player input" from the pet category, adding extra damage without crowding weapon attack frequency. One battle produces 18-25 activations for total damage of 5 x 20 = 100 effect damage, plus Poison DoT layered on top — a top-tier Common pet contribution.

Operation centers on leveraging the Poison triangular-decay mechanics. Even from Rat alone at 75% Poison 1, by the 3-minute mark Poison stacks pile to around 15, producing roughly 120 DoT damage. Add Emerald (weapon socket for Poison stacks), Belladonna's Whisper (Poison stack amplification), and Poison Fang family weapons, and Poison stacks jump to 30-50 — DoT cumulative damage reaches 400-1000, extreme high damage. A build that rivals or surpasses Reaper lifesteal in pure damage.

The real value of Rat lies in crafting Rat Chef (Rat + Healing Herbs). Rat Chef is a powerful pet that grants Regen and bonus effects on food activation — integrated with the food build (Pan + Banana + Garlic + Blueberry), it delivers double supply of Regen + Rat Chef's own Poison per food trigger. This is widely adopted as the Ranger food-build finale. Since Healing Herbs is 1 slot and 4G with easy access, after securing Rat, nearly-certain craft route progression is the basic operation.

Combined with Big Bowl of Treats (Pet 20% double activation), Rat's effective cadence shortens to around 2.7s, accelerating Poison accumulation. Running Adventurer's Little Bart / Goobert families in parallel raises pet activation frequency, which also lifts Twine Thread / activation-based buff expected values. However, Rat is Ranger-exclusive — other classes cannot equip. This is the prerequisite.

(Ranger-exclusive; other classes cannot equip)

• Once Healing Herbs arrives, insta-craft Rat Chef. Becomes the core of the Ranger food build
• Combine Pan + Banana + Garlic + Blueberry food core with Rat Chef for double effect of Regen + Poison per activation
• The 3.3s auto-activation stacks Poison between weapon hits. Rapid-attack bow synergy dramatically boosts total DPS
• In poison-specialized builds, Emerald (weapon socket) + Belladonna's Whisper + Rat stacks Poison to 30-50
• Big Bowl of Treats (pet 20% double activation) effectively accelerates Rat's cadence
• Earlier purchase = longer Poison accumulation time. Rounds 2-3 secure is ideal
• Depending on Healing Herbs timing, buying Rat first and holding is a valid strategy
• Solo performance is also high; pre-Rat-Chef craft, keep it deployed as damage contribution

Ranger Rat Chef Food Build

Craft Rat + Healing Herbs → Rat Chef, combined with the Pan + Banana + Garlic + Blueberry food core — the food-build finale. Per food activation: Regen grant + Rat Chef's own Poison stacks, piling up damage / healing / poison DoT simultaneously.

Ranger Poison-Specialized DoT

Rat + Emerald weapon socket + Belladonna's Whisper + Poison Fang family weapon stacks Poison to 30-50 — a poison-specialized DoT build. Rat's 3.3s triggers 20-25 rolls of 75% Poison per match, producing 1000+ DoT cumulative damage late game.

Ranger Pet Mass-Generation Build

Rat + Big Bowl of Treats + Little Bart → Goobert family + Shepherd's Crook maximizes pet activation frequency. 20% double activations compound, overwhelming the opponent with both tempo and pet damage.

Ranger Bow + Rat Hybrid

High-speed bow + Swift Gloves + Rat runs twin-axis damage (weapon DPS + pet Poison DoT). Rat's auto-Poison strengthens late-match play, and Poison also counters Block-heavy opponents who would otherwise blunt rapid-attack bows.

• Ranger-exclusive; other classes cannot equip. Watch pick mistakes
• Poison's triangular decay produces small damage in early seconds. Short matches end before full power
• 75% Poison probability introduces variance in short matches
• Enemy debuff purify (Chili Pepper etc.) wipes Poison stacks and cuts off DoT
• Rat Chef craft requires Healing Herbs — Ranger only can take this route
• Pet category; enemies with "pet nullify" effects disable the function
• After Rat Chef craft, Rat is consumed as material. Raw Rat damage is lost
• 4G is mid-range among Commons. Competing with other early buys shifts priority by class direction

This item feeds into the following upgrade paths.