Twitch's basic attacks apply a stack of Deadly Venom, dealing 2 / 4 / 6 / 8 true damage per second for 6 seconds. This effect can stack up to 6 times for a minimum of 12 / 24 / 36 / 48 and maximum of 72 / 144 / 216 / 288 total true damage over the duration.
Active: For 1.25 seconds, Twitch attempts to enter stealth, which may be delayed by up to 3 seconds if he takes damage before he goes invisible. While in stealth, Twitch gains 20% bonus movement speed.
When Twitch unstealths, he gains bonus attack speed for 5 seconds. Casting spells or attacking will end his stealth prematurely.
Deadly Venom stacks are NOT removed when this ability is used.
Cooldown: 120 / 110 / 100
Cost: 100 / 125 / 150 mana
Active: For 7 seconds, Twitch gains bonus attack damage and 300 attack range. Additionally, each of his basic attacks will pierce enemies in an 850 length line, with each unit struck reducing the attack's damage by 20% down to a minimum of 40% damage.
Attack Damage: 20 / 28 / 36
Spray and Pray is a self-buff ability that also causes Twitch's basic attacks to be replaced by pass-through linear skill shots.
Spray and Pray has no cast time and does not interrupt Twitch's previous orders.
Twitch's attacks during Spray and Pray can outrange turrets (850 range opposed to the turrets' 800) meaning he can damage them during Spray and Pray without taking damage from them.
Twitch's attacks will pass through structures and terrain, but will not damage structures unless they were directly targeted for the attack. The exception is the Nexus - Twitch's attacks will not deal any damage to it. This is likely a bug.
For purposes of Runaan's Hurricane, attacking with Spray and Pray counts as a single auto-attack against a single targeted enemy, and as such will only launch one pair of ordinary single-target bolts to nearby enemies.