Passive: Damnation

BASIC ATTACKS: Thresh's basic attacks do not use projectiles and his basic attack wind-up is only reduced by 0.25% per Attack speed icon 1% bonus attack speed (compared to the standard 1% per 1%).

INNATE: Enemies who die near Thresh drop souls for 8 seconds, which he can collect by either approaching them or by placing Dark Passage Dark Passage's lantern near them. Each collected soul permanently grants Thresh Ability power icon 0.75 bonus ability power, Armor icon 0.75 bonus armor and increases Dark Passage Dark Passage's shield's strength and Flay Flay's minimum Ability power bonus magic damage by 1.

Champions and large enemies always drop 1 soul, epic monsters always drop 2, but small minions and monsters only have a 33% chance to drop 1. Souls are visible to allies and only become visible to enemies if their team has Sight icon sight of Thresh.

Q: Death Sequence

FIRST CAST - DEATH SENTENCE: After a 0.5-second delay, Thresh throws out his scythe in the target direction and forms a tether with the first enemy hit, dealing magic damage and Stun icon stunning them for 1.5 seconds. Hitting an enemy reduces Death Sentence's Cooldown reduction icon cooldown by 3 seconds.

MAGIC DAMAGE:
80 / 120 / 160 / 200 / 240 (+ 50% AP)
While the tether persists, Thresh is Disarm icon disarmed and periodically tugs at his scythe's chain, Airborne icon pulling the target a short distance towards himself. After 0.5 seconds, or instantly upon hitting a minion or monster, Thresh can cast Death Leap Death Leap while the tether holds.

Death Leap
SECOND CAST - DEATH LEAP: Thresh Dash dashes to the tethered enemy, removing the Stun icon stun but becoming able to attack again.

W: Dark Passage

ACTIVE: Thresh throws his lantern to the target location, Sight icon revealing its immediate surroundings and collecting nearby Damnation souls for the duration. The lantern remains for 6 seconds and automatically returns to Thresh if he moves more than 1500 units away from it.

Thresh and the first ally to come near the lantern is Hybrid resistances icon shielded for 4 seconds.

SHIELD STRENGTH:
60 / 100 / 140 / 180 / 220 (+ 1 per collected Damnation soul)
An ally that grabs the lantern will Dash dash to Thresh's location and shield themselves for the same duration.

E: Flay

PASSIVE: Thresh's basic attacks deal bonus magic damage, increasing with time spent not attacking enemy units or neutral monsters.

BONUS MAGIC DAMAGE:
Collected Damnation souls (+ up to 100 / 125 / 150 / 175 / 200% AD)
Flay
ACTIVE: Thresh sweeps his chain in a broad line towards the target direction, dealing magic damage to enemies hit, Airborne icon knocking them in the chain's direction, and Slow icon slowing them afterwards for 1 second.

MAGIC DAMAGE:
65 / 95 / 125 / 155 / 185 (+ 40% AP)
SLOW:
20 / 25 / 30 / 35 / 40%

R: The Box

ACTIVE: After a 0.75-second delay, Thresh surrounds himself with 5 spectral walls, each lasting for up to 5 seconds. Walls break upon contact with an enemy champion, dealing magic damage and Slow icon slowing by 99% for 2 seconds.

MAGIC DAMAGE:
250 / 400 / 550 (+ 100% AP)
Enemy champions hitting any wall beyond the first take no damage and are Slow icon slowed for only 1 second.

When I play Thresh I almost always invade. The main three times I don't is when: the enemy team is stronger at level 1, the enemy team has a Blitzcrank, or the enemy team has an Alistar.

When you invade you are going to want to path through the enemy bot side jungle with your jungler, ADC, and maybe mid laner. When you run into an enemy simply land a Q for the stun and then if the scenario looks like you can win simply recast Q while your team kills the enemy.

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Warding is so important on every single support champion. When you start make you either ward the river bush or tri bush to spot ganks, but once you get a control ward make sure both of those bushes are warded at all times. Once you have completed your support item, you can leave lane to ward enemy botside jungle camps occasionally. This will benefit everybody on your team because they will be able to find the jungler and avoid ganks.

Thanks for reading my guide guys!

This is one of my first and I know its pretty short, but I hope to expand it in the future.