Notes

Ruined King's Tribute: Every 4 seconds in combat your next attack deals damage to nearby champions and large monsters equal to 3% of your max health and heals you for [20 -75]% of this amount based on level. Ranged Champions: Damage and healing are halved.
Stormlord's Mandate: Hitting a champion with 3 unique attacks or abilities within 2 seconds deals bonus magic damage. Damage: 40-220(+25% Bonus AD)(+20% Ability Power) Cooldown: 50 seconds
Blood Moon's Call: Enchants your boots with the active effect 'Blood Moon's Call.' Channel for three seconds to activate Blood Moon's Call. Gain 35 percent movement speed for 15 seconds. Damaging attacks or abilities end Blood Moon's Call, dealing 60 - 140 based on level (+0.2 bonus AD)(+0.3 AP) bonus damage. Cooldown: 180 seconds. Starts the game on cooldown and goes on cooldown if damaged or interrupted while channeling.
Berserk: 3 seconds after damaging a champion you go Berserk, gaining 60% Attack Speed for 3 seconds. You can extend the effect to 10 seconds by attacking an enemy champion. Berserk lets you transcend the attack speed cap.
Spellslinger's Surge: Hitting a champion with 3 unique attacks or abilities within 2 seconds grants 30%-60% movement speed for 3 seconds. Additionally, Melee champions gain 75% slow resistance while active. Cooldown: 15 seconds
Perxie: Your attacks and abilities send Perxie to a target. Perxie shields allies by 40 - 120 based on level (+0.3AP or +0.3 bonus AD) or damages enemies for 10 + 40 based on level (+0.1AP or +0.15 bonus AD). Perxie cannot be sent out again until she returns to you.
Meteor: Damaging a champion with an ability hurls a meteor at their location. If the meteor hits them it deals bonus damage [40-100, based on your level +0.2AP and 0.2 bonus AD Cooldown: 20 - 8 seconds
Non-keystones:
Magical Footwear: You get free boots at 10 minutes but you cannot buy boots before then. These boots grant you +10 movement speed (in addition to the other boots effects).
Store Credit: You can enter debt to buy items. The amount you can borrow increases over time. Debt limit: 150 + 5/minute. Lending Fee: 50 gold per item
Channel-Blink: While Flash is on cooldown it is replaced by Channel-Blink. Channel-Blink: Channel for 2.5 seconds to blink to a new location. Cooldown: 20 seconds. Goes on a 10 second cooldown when you enter champion combat.
Perfect Timing: Start the game with a Commencing Stopwatch that transforms into a Stopwatch after 6 minutes. Reduces the cooldown of Zhonyas Hourglass and Guardian Angel by 15%.
Intelligence: +5% Cooldown Reduction. +5% Max Cooldown Reduction. +5% Summoner Spell Cooldown Reduction. +5% Item Cooldown Reduction. +5% Runes Cooldown Reduction.
Panic!: Gain 10% Movement Speed towards nearby allies that are CC'ed or enemies that you CC. Range: 1500
Overcharger: +1% CDR per level, up to +10% CDR at level 10. Each percent of excess CDR is converted to +2 Ability Power or +1.4 Attack Damage, Adaptive.
Perfectionist: While above 80% health, gain up to +14 Attack Damage or +20 Ability Power, Adaptive (based on level)
Overheal: Excess healing becomes a decaying shield, for up to 10% of your total health.
Bloodlust: Takedowns restore 15% missing health.
Ravenous Hunter: 2% Spellvamp per Bounty Hunter stack. Earn a Bounty Hunter stack the first time you get a takedown on each enemy champion.
Ingenious Hunter: 5% Active Item CDR per Bounty Hunter stack. Earn a Bounty Hunter stack the first time you get a takedown on each enemy champion.
Relentless Hunter: 10 out of combat Movement Speed per Bounty Hunter stack. Earn a Bounty Hunter stack the first time you get a takedown on each enemy champion.
Zombie Ward: After killing an enemy ward, a friendly Zombie Ward is raised in its place. Zombie Wards are visible, last for 180 seconds and don’t count towards your ward limit.
Watchful Poro: When you enter brush, a poro appears. It will stay behind to give you vision until an enemy champion scares it away or you enter a new brush.
Trophy Collector: Gain +1 Ability Power or +.7 Attack Damage (Adaptive) when you or a nearby ally kill an enemy champion or an enemy ward.
Essence Thief: Gain 1 permanent max health when enemy minions die near you. Range: 1400 units
Don't Panic!: Heals and shields are 5% stronger, increased to 10% on targets below 40% health.
The Third Path: +100 Health (permanently). -10% Damage to Champions until 10 minutes
Stone Skin: Gain 5 Armor, +2 per nearby enemy champion. Range: 800 units
Fortified Mind: Gain 5 Magic Resist, +2 per nearby enemy champion. Range: 800 units
Discipline: After 10 minutes gain 10 Armor and 10 Magic Resist, +2 of each per nearby enemy champion. Range: 800 units
New Items:
Stopwatch 600 Gold - UNIQUE Active - Stasis: Become invulnerable and untargetable for 2.5 seconds, but be unable to move, attack, cast spells, or use items during this time (One time use)
Broken Stopwatch: 600 Gold - Is broken, but can still be upgraded. (After breaking one Stopwatch, the shopkeeper will only sell you Broken Stopwatches.)