Lulu - Easter Egg

Lulu's Help, Pix!'s buff icon is called "Hey! Listen!", which is a reference to Navi.  

Warwick's Joke and Dance

Warwick's joke "All the better to eat you with, my dear." is from Little Red Riding Hood, while his dance is the Thriller. 

Warwick's Joke and Dance

Warwick's joke "All the better to eat you with, my dear." is from Little Red Riding Hood, while his dance is the Thriller. 

Feed the Poros on Howling Abyss- Eater Egg

Poros are little fluffy, sheep-like creatures that inhabit the Howling Abyss. 
They are harmless and pretty shy. If you approach them, they'll try to run away from you. Unless you're holding some Poro-Snax. Poro-Snax can be obtained iby putting one point in the Biscuiteer mastery. it'll take up one item slot until consumed. 
Poros will happily follow anyone holding Poro-Snax. Activate it like a health potion to feed a nearby Poro and make it grow. Multiple players can feed the same Poro to make it grow even larger. If all ten players feed the same Poro with Poro-Snax, it will explode into seven little Poros, scattering from the center. 

Haloween Map Easter Egg 2

In the Haloween map of Summoner's Rift, Urf's grave was near the blue buff at Baron. Also near the tribush. If Warwick went to his grave, Urf's goast would appear and deal 1 damage to Ww. Spellshields would block this. This only works if Warwick has the Urf the Manatee Warwick skin. 

Haloween Map Easter Egg

In the Summoner's Rift Haloween map, near bot lane outside of the map layed three coffins and on top of them layed the corpes of three canceled champions: 

Tabu, The Voodoo Shaman, 

Averdrian,

And Gavid, The Plant King.

Howling Abyss Easter Egg

The announcer will occasionally welcome players to the "Murder Bridge", rather than the "Howling Abyss".

Zac Easter Egg

Zac becomes larger or smaller depending on how much health he has. 

Zombie Brand

The legendary skin Zombie Brand has a unique run animation and movement dialogue while chasing an enemy champion. 

Break Terrain in Howling Abyss

Certain structures in the map will break and fall in to the abyss after a certain action is done.

Dying near one of the statues on the bridge's sides might cause it to break or not.

Walking near the large pillar on the left side of the blue team's base will cause it to topple down.

Scoring a first blood will destroy another bridge at the leftmost side of the map.

There are a set of blocks near the purple team's outer turret that will fall when walking near it.

After losing a set amount of health, the turrets will begin to crumble. This can happen twice before being destroyed.

Go watch a vide about it here: http://www.youtube.com/watch?v=ZT_1Mi8-M2g

Ebonnaw Skeletal Remains

Vilemaw's lair features the skeletal remains of the Twisted Treeline's former boss, Ebonnaw. 

Syndra Hidden Passive

Syndra's Force of Will (W) gains a bonus effect when used on the Ancient Golem or the Lizard Elder.

• Upon throwing the Ancient Golem, Syndra will replenish 10 mana and the cooldown of Force of Will is decreased by 1 second.
• Enemies hit by the Lizard Elder are afflicted by the Blessing of the Lizard Elder (Red buff). 

Lissandra's Voice on Howling Abyss

If you wait while after the Victory (does not include defeat) screen after the end of the game, you will be able to hear Lissandra talk about herself, her history and the Abyss. Hear her talk here: http://m.youtube.com/watch?v=nuMRNGiTiEk

The Battle for Freljord

Ashe, Sejuani, and Lissandra are the leaders of three tribes vying for control over Freljord. There must be two Freljordian leaders, one in each team, in the game. And there can only be one leader in one team (for example Sejuani and Ashe), these leaders must also not be the the same champions. (For example Ashe vs. Lissandra or Lissandra vs. Sejuani).
Both leaders must have participated in at least twenty kills for their respective teams. They must have a kill+assist count that sums up to twenty or above.
A quest, called "Battle for Freljord", will then appear for all the players in the game. Ashe, Sejuani, and Lissandra each have a unique "battle cry," announcing this event. 

Ashe: "The fate of our people hangs in the balance." 
Sejuani: "We settle this, here and now!"
Lissandra: "At last, our ascention is at hand."


The quest messages depends on the allied and enemy leaders. 

Sejuani vs. Ashe: Ashe's peaceful alliance. Sejuani must kill her and rule with strength.
Sejuani vs. Lissandra: Lissandra is an abomination. Sejuani must crush her to purify the Freljord. 

Lissandra vs. Sejuani: Sejuani is too reckless and powerful to control. Lissandra must put her down.
Lissandra vs. Ashe: Ashe is a powerful symol to her people. Lissandra must kill her, so they will fall in line. 

Ashe vs. Lissandra: Lissandra is an abonimation. Ashe must eliminate her to protect her people.
Ashe vs. Sejuani: Sejuani cannot be reasoned with. Ashe must defeat her to build a better future for the Freljord. 


The quest will remain active until one of the Freljord leaders kill, or assist in killing the opposite leader. Each leader has a secret victory taunt, only heard upon completing the quest.

Lissandra: "The Iceborn rule Freljord."
Sejuani: "I rule the Freljord!"
Ashe: "The Freljord unites!"

The victor is rewarded with a permanent ice crown and a buff icon, labeled "Queen of the Freljord", of their tribe detailing their success. 

Ashe's buff says, "Peace has been restored to the Freljord. Ashe will lead her people to a better future."
Sejuani's buff says, "The Freljord has been purified. No one challenges Sejuani's rule."
Lissandras buff says, "No one is strong enough to stop Lissandra. The rise of the Iceborn is at hand."


The buff doesn't provide any additional stats or gold and will not be lost upon death. This quest can only occur once per match. 

Thresh Easter Eggs

Tresh has two Easter eggs:

• Nunu will always drop two souls, one from both Nunu and Willump. Strangely, Sejani does not drop two souls. 
• Thresh's skin Deep Sea Tresh, has a unique recall animation, where he hooks and pulls up a chest of gold. But occasionally, he will hook a tire instead. 

"Here's to you, kid"

While using the Jaximus skin, Jax will occasionally say: "Here's to you, kid." This is a memorial tribute to Joe, an cancer patient who visited Riot thanks to the Make-A-Wish-Foundation.

Eggnivia

If Anivia chats with the other players while Rebirth is active, her name will be replaced by Eggnivia.

Vilemaw Dance

If two champions, enemies or allies, dance near Villemaw (the epic monster on Twisted Treeline) within five seconds of eachother, he will begin to dance. If one champion don't dance within five seconds, Villemaw won't dance. Before, all that took for him to dance was that Elise danced infront of him. 

This easter egg can be triggered multiple times in a single game. Any damage to Vilemaw will immediately cancel his dancing animation. 

Go watch him dance here: http://www.youtube.com/watch?v=tv_nOw3NS68

Skar... Skar... SKARNER!

If Skarner stands in a bush for twelve seconds, he may or may not say one phrase: "Skar Skar Skarner". It's impossible to predict in which bush Skarner will choose to say it, and he will only say it once per match. 

It's a reference to Pokemon franchies, in which Pokemons can be found in bushes and often calls out their names in a repetitive fashion. 

Malphite Easter Egg

When Malphite uses his Ground Slam (his E), Riot's logo will actually appear on the ground for a short moment.