Tiamat

Availability	Common
Tier	Advanced
Stats	+40 attack damage; +15 health regeneration; Melee only
Passive	Unique – Cleave (Melee only): Your attacks deal physical damage up to 60% of your Attack Damage to units around your target, decaying down to 20% near the edge.
Active	Unique – Crescent (Melee only): Deals physical damage up to 100% of your Attack Damage to units around you, decaying down to 60% near the edge. (10 second cooldown)
Menu	Attack > Damage; Defense > Health Regen
Item cost	1900g (265g)
Sell value	1330g
Item code	3077

Tiamat is an advanced item in League of Legends.^[1]

Recipe Edit

Gold Efficiency

This item shares the Cleave and Crescent effects with Ravenous Hydra.
Cleave's damage is based on the attack damage champion statistic, not from actual damage dealt on the attack—it therefore doesn't benefit from critical strikes or on-hit effects (such as Sheen).
Cleave does not trigger on-hit effects or life steal ( Ravenous Hydra's Cleave does trigger life steal, though).
Cleave will not trigger if it has triggered on a different target in the last 0.05 seconds.^[2]
- This affects abilities such as Shyvana's Twin Bite (Dragon form), but not abilities that affect a single target, such as Master Yi's Double Strike.
Cleave has a radius of ~385; Crescent has a radius of 400.^[3]
- Cleave is centered on the target; Crescent is centered on the user.
Shapeshifting champions can only use Cleave and Crescent while classified as melee. This includes Kayle, who is considered a ranged champion while Righteous Fury is active, Nidalee when using Aspect of the Cougar, and Quinn while her ultimate Tag Team is activated.
Activating Crescent instantly deals damage around you and resets the auto-attack timer as well. This makes it look like a fast triple attack.

In Babylonian mythology, Tiamat was the first dragon and was slain to make the heavens, earth, and man.
In the V1.0.0.115 April Fools day patch Tiamat was renamed to Tamat, the name of a Rioter.

V3.6:

V1.0.0.152: Reworked

New recipe: Pickaxe + Long Sword + Rejuvenation Bead + Rejuvenation Bead
Item cost increased to 2300 from 2070.
Combine cost increased to 665 from 250.
No longer grants mana regen.
NEW Unique Passive – Cleave (Melee Only): Your attacks deal up to 60% of your attack damage to units around your target, decaying down to 20% near the edge.
NEW Unique Active – Crescent (Melee Only): Deals up to 100% of your attack damage to units around you, decaying down to 60% near the edge - 10 second cooldown.
Used in new item recipe: Ravenous Hydra

Recipe changed: Now requires Faerie Charm and Rejuvenation Bead instead of Regrowth Pendant and Meki Pendant.
Health regeneration per 5 reduced to 15 from 22.
Mana regeneration per 5 reduced to 4 from 7.
Total cost decreased to 2320 from 2755.