Force of Nature

Unique – Steadfast: Taking magic damage from champions grants a stack of Steadfast for 7 seconds, stacking up to 8 times with the duration refreshing on subsequent magic damage from them and whenever dealing damage to them. Becoming immobilized by an enemy champion grants 2 stacks and also refreshes the duration. Damaging basic attacks and spells per cast instance can only grant 1 stack of Steadfast every 1 second. At maximum stacks, gain 70 bonus magic resistance and 10% bonus movement speed.

Limited to 1 Force of Nature.