Mechanical Fury: Rusty doesn't have mana instead he has Fury. His abilities need Fury to work. His fury is capped at 100. If he drained 100 fury Mechanical Fury goes on cooldown. After the cooldown Rusty's fury is full again.
Steam Hot Armor: Rusty gains 10 armor every 50 bonus AD.
COST: 20 Fury
Active: Rusty empowers his next attack for 5 seconds. The next attack made will deal bonus physical damage stun the target for 0.5 seconds and can critically strike dealing 40% AD as bonus damage.