{"id":17514,"date":"2026-02-18T15:08:35","date_gmt":"2026-02-18T15:08:35","guid":{"rendered":"https:\/\/magicstark.cz\/wiki\/force-of-nature\/"},"modified":"2026-03-03T21:33:24","modified_gmt":"2026-03-03T21:33:24","slug":"force-of-nature","status":"publish","type":"wiki","link":"https:\/\/magicstark.cz\/en\/wiki\/force-of-nature\/","title":{"rendered":"Force of Nature"},"content":{"rendered":"\n

What is Force of Nature? \ud83c\udf2a\ufe0f<\/strong><\/h2>\n\n\n\n

Force of Nature is the dedicated anti-magic-damage scaling item<\/strong> for tanks facing AP-heavy compositions \u2014 a legendary that converts incoming magic damage from champions into a stacking MR and movement speed buff that grows stronger the more the champion is hit<\/strong>. Unlike flat MR items (Kaenic Rookern<\/strong><\/a> MANAWALL, Spirit Visage<\/strong><\/a> healing amplification), STEADFAST’s value is reactive and proportional to magic damage pressure<\/strong>: against one AP champion dealing moderate magic damage, the item provides standard MR. Against a full AP team hitting the tank continuously, STEADFAST’s 8-stack maximum unlocks an additional +70 bonus MR and +6% bonus movement speed<\/strong> \u2014 turning sustained AP pressure into the tank’s own stat-scaling advantage.<\/p>\n\n\n\n

The 55 MR + 400 HP + 4% movement speed<\/strong> base stat profile is one of the most movement-speed-generous MR items in the game. The 4% base movement speed (independent of STEADFAST stacks) compounds with the STEADFAST +6% at maximum stacks for a total of +10% bonus movement speed at full stacks<\/strong>. For engage tanks who need to close distances against kiting AP carries (Lux, Orianna, Viktor), this movement speed advantage directly translates into improved ability to reach and stick to targets even as the AP carry attempts to maintain range.<\/p>\n\n\n\n

The stack refresh on dealing damage to the magic damage source<\/strong> is STEADFAST’s critical survivability loop: the tank doesn’t just accumulate stacks from getting hit \u2014 attacking back also refreshes the 7-second stack duration. This creates a self-sustaining feedback pattern: the AP champion hits the tank (generates stacks), the tank hits the AP champion back (refreshes stack duration), keeping STEADFAST at high stack counts for the entire fight duration as long as mutual engagement continues. Sell: 1,960 Gold<\/strong>, ID: 4401.<\/p>\n\n\n\n

\ud83d\udcca Base Statistics<\/strong><\/h2>\n\n\n\n
Statistic<\/strong><\/td>Value<\/strong><\/td><\/tr>
Total Cost<\/td>2,800 Gold<\/td><\/tr>
Combine Cost<\/td>750 Gold<\/td><\/tr>
Sell Price<\/td>1,960 Gold<\/td><\/tr>
Magic Resistance<\/td>+55 MR<\/td><\/tr>
Health<\/td>+400 HP<\/td><\/tr>
Movement Speed<\/td>+4% movement speed (base, always active)<\/td><\/tr>
STEADFAST: Stack trigger<\/td>Taking magic damage from champions<\/td><\/tr>
STEADFAST: Additional trigger<\/td>Becoming immobilized by an enemy champion<\/td><\/tr>
STEADFAST: Stack duration<\/td>7 seconds per stack<\/td><\/tr>
STEADFAST: Max stacks (SR\/ARAM\/NB)<\/td>8 stacks<\/td><\/tr>
STEADFAST: Stack refresh conditions<\/td>Subsequent magic damage from them AND dealing damage to them<\/td><\/tr>
STEADFAST: Stack rate limit<\/td>Once per cast instance; each source generates max 1 stack per 1 second from their damage<\/td><\/tr>
STEADFAST: Max stack bonus MR<\/td>+70 bonus MR (SR\/ARAM\/NB)<\/td><\/tr>
STEADFAST: Max stack bonus MS<\/td>+6% bonus movement speed (SR\/ARAM\/NB)<\/td><\/tr>
Total MR at max stacks (SR)<\/td>55 + 70 = 125 MR<\/td><\/tr>
Total MS bonus at max stacks (SR)<\/td>4% base + 6% STEADFAST = +10% total movement speed bonus<\/td><\/tr>
Arena: MR<\/td>50 (reduced from 55)<\/td><\/tr>
Arena: Max stacks<\/td>10 (increased from 8)<\/td><\/tr>
Arena: Bonus MR at max stacks<\/td>50 (reduced from 70)<\/td><\/tr>
Arena: Bonus movement speed at max<\/td>14% (increased from 6%)<\/td><\/tr>
Item limit<\/td>Limited to 1 Force of Nature<\/td><\/tr>
Item ID<\/td>4401<\/td><\/tr>
Availability<\/td>SR 5v5, ARAM, Nexus Blitz, Arena<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
STEADFAST \u2014 Maximum Stack Payoff Math<\/strong>At 8 stacks (SR\/ARAM\/NB), STEADFAST grants +70 bonus MR and +6% bonus movement speed on top of the item’s base stats.Total MR at maximum stacks: 55 base MR + 70 STEADFAST bonus MR = 125 MR total from Force of Nature alone.MR damage reduction at 125 MR: 125 \/ (100 + 125) = 55.6% magic damage reduction. A champion with 125 MR from Force of Nature at max stacks takes 44.4% of raw magic damage as effective magic damage.Total movement speed bonus at max stacks: +4% base (always active) + 6% STEADFAST at max stacks = +10% total movement speed from the item. For a champion with 340 base movement speed: +10% = +34 movement speed = 374 effective MS. Against Lux (325 MS) and Orianna (325 MS), a Malphite or Galio at 374 MS can close distance during STEADFAST peak without needing additional movement speed items.Time to max stacks: each magic damage instance from a champion ability generates 1 stack per second per source. Against a mid AP champion throwing 4+ ability casts in a 7-second window (Syndra Q + W + E + R, Lux Q + E + R), 8 stacks can be reached in a single trade window. Each ability cast from the AP champion provides one stack (once per cast instance, max 1 per second from each source).Arena at 10 stacks maximum: Arena’s longer sustained rounds mean 10 stacks can be accumulated over the fight duration. At 10 stacks: base 50 MR + 50 bonus MR = 100 MR total, and base movement speed bonus varies by champion + 14% STEADFAST MS. The 14% Arena movement speed bonus is substantially larger than SR’s 6% \u2014 at 340 base MS, 14% = +47.6 MS = 387.6 effective MS at full Arena STEADFAST.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ud83d\udd28 Recipe & Components<\/strong><\/h2>\n\n\n\n

Force of Nature builds from Negatron Cloak + Ruby Crystal + Winged Moonplate<\/strong> with a 750g combine:<\/p>\n\n\n\n

Component<\/strong><\/td>Cost<\/strong><\/td>Notes<\/strong><\/td><\/tr>
Negatron Cloak<\/td>850 Gold (+450)<\/td>Null-Magic Mantle (400g) + 450 combine; +30 MR at component; the primary MR input; also builds into Abyssal Mask, Hollow Radiance, Spirit Visage<\/td><\/tr>
Null-Magic Mantle<\/td>400 Gold<\/td>Part of Negatron Cloak \u2014 MR input<\/td><\/tr>
Ruby Crystal<\/td>400 Gold<\/td>+150 HP at component; the HP input for Force of Nature<\/td><\/tr>
Winged Moonplate<\/td>800 Gold (+400)<\/td>Ruby Crystal (400g) + 400 combine; +150 HP + 3% movement speed at component; the movement speed input; also builds into Jak’Sho The Protean<\/td><\/tr>
Ruby Crystal<\/td>400 Gold<\/td>Part of Winged Moonplate \u2014 HP input<\/td><\/tr>
Combine Cost<\/td>750 Gold<\/td><\/td><\/tr>
Total<\/td>2,800 Gold<\/td>55 MR + 400 HP + 4% MS + STEADFAST passive; mid-build Negatron Cloak provides strong early MR spike before full completion<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
Negatron Cloak \u2014 Strong Mid-Build MR Spike<\/strong>Negatron Cloak<\/strong><\/a> (850g): +30 MR at component. Completing Negatron Cloak on the first back provides a substantial MR wall before full Force of Nature completion. For tanks being pressured by AP damage in laning or early mid-game, Negatron Cloak completed at 850g provides immediate MR where it matters most.Recommended purchase order:  Negatron Cloak (850g) first back: +30 MR immediately; core MR foundation; meaningful mid-build stopping point against AP pressure.  Ruby Crystal (400g): +150 HP; mid-build HP cushion.  Winged Moonplate (800g) + 750g combine: completes Force of Nature; STEADFAST live; +4% MS from Winged Moonplate component active pre-combine.Negatron Cloak also builds into Abyssal Mask, Hollow Radiance, and Spirit Visage \u2014 building it first maintains flexibility to redirect if the AP damage assessment changes before full Force of Nature completion.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ud83c\udf2a\ufe0f STEADFAST \u2014 Complete Mechanics Reference<\/strong><\/h2>\n\n\n\n

Stack Generation \u2014 Magic Damage from Champions + Immobilization<\/strong><\/h3>\n\n\n\n

STEADFAST generates stacks from two distinct trigger categories. The primary trigger: taking magic damage from champion abilities<\/strong>. The secondary trigger: becoming immobilized by an enemy champion<\/strong> (stuns, roots, snares, knockups, knockbacks \u2014 any immobilizing CC). Both triggers generate a STEADFAST stack and both refresh the 7-second stack duration<\/strong>. The immobilization trigger is particularly significant because it generates stacks even without magic damage \u2014 a champion using a physical CC ability (Leona Q stun, Darius E pull) generates STEADFAST stacks as long as the CC causes immobilization.<\/p>\n\n\n\n

Once per cast instance, each incoming basic attack, ability, or item effect can only generate 1 stack of Steadfast from their damage every 1 second<\/strong>. This rate limit prevents a single multi-hit ability from generating multiple stacks in rapid succession \u2014 a Lux Q that hits twice (light snare on two targets) generates only 1 STEADFAST stack per second per source from the same cast instance, not 2 from two hits. The ‘once per cast instance’ rule means rapid-fire DoTs or multi-hit abilities still only provide 1 stack per second of their continuous damage.<\/p>\n\n\n\n

The stack duration refreshes when dealing damage to the magic damage source<\/strong> \u2014 not just when taking magic damage. This creates a mutual-engagement refresh loop: when the tank attacks back against the AP champion who is attacking them, the attack itself refreshes all STEADFAST stack timers. In a sustained melee fight where both the tank and AP champion are trading blows, STEADFAST stacks effectively never expire as long as the exchange continues, maintaining maximum 8-stack MR and movement speed bonuses throughout the entire engagement.<\/p>\n\n\n\n

What Generates STEADFAST Stacks<\/strong><\/h3>\n\n\n\n

Based on the wiki’s confirmed interaction notes, the following DO generate STEADFAST stacks<\/strong> when dealing magic damage to the user:<\/p>\n\n\n\n