Lukas: Best build, Counters

Hero's Resolve

Lukas gains 0.5 Resolve per second and 3.5 Resolve when dealing damage to heroes.
Upon reaching 100 Resolve, he can use Unleash the Beast to transform into Sacred Beast.
Sacred Beast: Greatly increases combat attributes. He continuously consumes Resolve and ends when Resolve is depleted.

Flash Combo

CD: 5.5

Passive: Basic Attacks grant Vigor (up to 2 stacks), each stack lasting 4s. Vigor enhances Flash Combo.
Lukas consumes all Vigor to unleash Pulverize, dealing 280 (+120% Total Physical Attack) Physical Damage and recovering 6% of his HP when hitting a hero or minion.
1 Stack: Lukas briefly stuns the target and spins his tonfa hammers to deal 80 (+45% Total Physical Attack) Physical Damage 3 times, pulling the enemy toward him.
2 Stacks: Lukas briefly stuns the target, then delivers 2 attacks dealing 50 (+20% Total Physical Attack) Physical Damage each. Afterward, he spins his tonfa hammers, dealing 80 (+45% Total Physical Attack) Physical Damage 3 times while gaining Control Immunity for the duration.

Flash Step

CD: 12

Lukas dashes in the target direction, empowering his next Basic Attack within 4s into Flash Strike.
Flash Strike: Lukas dashes behind the enemy, dealing 60 (+125% Total Physical Attack) Physical Damage. He then gains 20% Movement Speed and Attack Speed for 4s. During this time, his next Basic Attack gains increased Attack Range and triggers a sacred lightning that deals 110 (+50% Total Physical Attack) extra Physical Damage.

Unleash the Beast

First Cast: Lukas transforms into his Sacred Beast form (briefly gains Control Immunity). His base Movement Speed is increased by 30, all attributes are increased by 15%, and his skills gain new effects.
Use Again: Fires a Shockwave Blast in the target direction that explodes upon hitting an enemy hero or reaching its maximum range, dealing 450 (+155% Total Physical Attack) Physical Damage.
All attributes: HP, Physical Attack, Physical Defense, Magic Defense, Attack Speed, and Attack Range.