A mythical[1] item is an item that is crafted from at least one legendary item. They are more or less pricier than the legendary, advanced and basic items.

The general list can be found here: Category:Mythical items

Mythical Items

Blade of the Ruined King item.png Blade of the Ruined King: +40 attack damage. +25% attack speed. +12% life steal. Active: Unique: Deals 100 magic damage and steals 25% of the target's movement speed for 3 seconds (550 range) (90 second cooldown). Passive: Unique: Basic attacks deal 8% of the target's current health (min 15) bonus on-hit physical damage (max 60 against minions and monsters). 
Recipe: Bilgewater Cutlass item.png Bilgewater Cutlass + Recurve Bow item.png Recurve Bow + Gold 900 = Gold 3400.
Hextech Gunblade item.png Hextech Gunblade: +40 attack damage. +80 ability power. Active: Unique – Lightning Bolt: Instantly deals 175 - 250 (based on level) (+ 30% AP) magic damage and Slow icon slows the target champion's movement speed by 40% for 2 seconds (700 range) (40 second cooldown, shared with other Hextech items). Passive: Unique: Instantly heal for 15% of all damage dealt, including physical, magic, and true damage. This is 33% effective for area of effect damage. 
Recipe: Bilgewater Cutlass item.png Bilgewater Cutlass + Hextech Revolver item.png Hextech Revolver + Gold 700 = Gold 3400.
Muramana item.png Muramana: +25 attack damage. +1000 mana. Passive: Unique – Awe: Grants bonus attack damage equal to 2% maximum mana. Refunds 15% spent mana. Passive: Unique – Shock: Unit-targeted abilities and basic attacks on champions (on-hit) consume 3% current mana to deal 6% current mana bonus physical damage. This effect only activates while you have greater than 20% maximum mana
Recipe: Manamune item.png Manamune
Perfect Hex Core item.png Perfect Hex Core: Passive: Grants 10 - 180 (based on level) ability power and 25 - 450 (based on level) mana. Passive: Unique – Progress: Viktor Viktor can upgrade one of his basic abilities. Upon upgrading each of his basic ability, Viktor gains Glorious Evolution. Passive: Unique – Glorious Evolution: Viktor Viktor upgrades his Chaos Storm.png Chaos Storm
Recipe: The Hex Core mk-2 item.png The Hex Core mk-2 + Gold 750 = Gold 3000.
Seraph's Embrace item.png Seraph's Embrace: +80 ability power. +1000 mana. Active: Unique – Mana Shield: Drains 20% of your current mana to shield yourself for an equal amount plus 150 for 3 seconds (120 second cooldown). Passive: Unique – Awe: Grants bonus ability power equal to 3% maximum mana. Refunds 25% of mana spent
Recipe: Archangel's Staff item.png Archangel's Staff

Notes

  1. The term used in this item tier is conjectural for lack of any official term released by Riot Games

List of Items