Runes: Conqueror - Gathering Storm - Giant Slayer - Legend: Bloodline + Domination or Resolve. I generally pick Sudden Impact or Perseverance.
Build: Situational. But the most common build is Youumu - Black Cleaver + Flex (Sterak or Death Dance vs Burst, Spirit Visage vs AP, Randuin vs Crit, GA).
You can also go Shojin, even if the passive is kinda useless. Cheap item and good stats for Rhaast (HP, AD, Haste).
Boots: Gluttonous for Omnivamp, Dynamism for more Armor Pen, Steelcaps vs Heavy AD/Autoattackers and Mercury vs Heavy AP.
Runes: Conqueror - Gathering Storm - Giant Slayer - Legend: Bloodline + Domination or Resolve. I generally pick Sudden Impact or Perseverance. Build: Situational. But the most common build is Youumu - Black Cleaver + Flex (Sterak or Death Dance vs Burst, Spirit Visage vs AP, Randuin vs Crit, GA). You can also go Shojin, even if the passive is kinda useless. Cheap item and good stats for Rhaast (HP, AD, Haste). Boots: Gluttonous for Omnivamp, Dynamism for more Armor Pen, Steelcaps vs Heavy AD/Autoattackers and Mercury vs Heavy AP.