Calculate your chance of unique loot based on Enrage and Killstreak.
Unique Drop Chance (Any):–
Percentage per Kill:–
Est. Orb of Power Rate:–
Est. Dormant/Codex Rate:–
function calculateTelosDrops() {
// 1. Get Input Values
var enrageInput = document.getElementById("telosEnrage").value;
var streakInput = document.getElementById("telosStreak").value;
// 2. Validate Inputs
var enrage = parseFloat(enrageInput);
var streak = parseFloat(streakInput);
if (isNaN(enrage) || isNaN(streak)) {
alert("Please enter valid numbers for Enrage and Killstreak.");
return;
}
// Limit inputs to realistic game boundaries for safety
if (enrage > 4000) enrage = 4000;
if (streak > 200) streak = 200;
// 3. Calculation Logic
// Formula Logic: Denominator is fixed (approx 2630 based on 0/0 kill data).
// Numerator (Weight) = 10 + Floor(Enrage / 25) + Streak.
// This heuristic aligns with the 0% (1/263) and 4000% (1/15) known data points.
var denominator = 2630;
var numerator = 10 + Math.floor(enrage / 25) + streak;
// Probability of receiving ANY unique item
var probability = numerator / denominator;
// Invert for "1 in X" notation
var oneInX = denominator / numerator;
// 4. Breakdown Logic (approximate weights within the unique table)
// Once a unique is rolled:
// Orbs (Volcanic, Corrupted, Pure) account for roughly 70-75% of uniques.
// Dormants (Staff, Bow, Sword) + Reprisal Codex account for the rest.
var orbChance = oneInX / 0.72; // Adjusted estimate
var dormantChance = oneInX / 0.28; // Adjusted estimate
// 5. Display Results
var resultDiv = document.getElementById("telosResults");
resultDiv.style.display = "block";
// Update Text Content
document.getElementById("anyUniqueResult").innerHTML = "1 / " + oneInX.toFixed(1) + " kills";
document.getElementById("percentResult").innerHTML = (probability * 100).toFixed(2) + "%";
document.getElementById("orbResult").innerHTML = "~1 / " + orbChance.toFixed(0);
document.getElementById("dormantResult").innerHTML = "~1 / " + dormantChance.toFixed(0);
}
Understanding Telos Drop Rates in RS3
Telos, the Warden, remains one of the most mechanically complex and rewarding bosses in RuneScape 3. Unlike standard bosses where drop rates are static (e.g., 1/512), Telos uses a dynamic system where the probability of receiving a unique item—such as the Staff of Sliske components or the Dormant Seren Godbow—increases as you push higher Enrage levels and build longer Killstreaks.
Key Mechanic: The "Lottery of Death." When you kill Telos, the game rolls to see if you hit the unique drop table. The weight of your roll is determined by a formula combining your current Enrage percentage and your current streak length.
How Enrage Affects Drops
Enrage is the primary difficulty modifier. As enrage increases, Telos gains more health, damage, and mechanics. In terms of loot, Enrage adds "weight" to your roll for a unique item.
0-99% Enrage: The base drop rate is approximately 1/263.
100%+ Enrage: This is required to obtain the Phase 5 drops (Orbs of Power).
4000% Enrage: At the difficulty cap, the drop rate improves drastically to approximately 1/15 per kill.
The Impact of Killstreaks
While Enrage increases the difficulty ceiling, Killstreaks reward consistency. Every successful kill added to your streak without claiming the loot increases the numerator in the drop chance formula.
Many players debate between "High Enrage Claims" (doing single kills at high enrage like 2449%) versus "Streaking" (starting at 0% and going until death). Mathematically, streaking provides better common loot (normal drops), while high-enrage camping yields the highest frequency of unique items like Orbs of Power.
Loot Breakdown
Once you successfully roll a unique drop, the specific item is determined by a sub-table. The approximate distribution is:
Orbs of Power (Volcanic, Corrupted, Pure): These are the most common uniques, accounting for roughly 70-75% of purple drops. You need all three to create a Telos weapon.
Dormant Items (ZGS, SGB, SoS): These are rarer, appearing less frequently than orbs.
Reprisal Codex: An ability codex that shares the rarer weight table with dormant items.
Use the calculator above to plan your farming strategy. Whether you are pushing for "Warden" title or farming for profit, knowing your odds helps manage expectations during dry streaks.