But it only does damage equal to how many barons he's killed.

Swain's ult now sends out 5 birds to each target with 100% ap scaling

But he then stays in that form permanently, and can no longer use other spells

Mordekaiser can now ghost his own team with no damage to his teammates.

(got ninja'd, changing)

But the ghosts only appear in the case of a pentakill, and the ghosts have health equal to the damaging blow that killed the champion.

All of Ezreal's abilities are now global.

But the skill shots are revealed to the enemy team on the minimap whenever they are fired and move insanely slow.

Syndra's ult now deals 800 damage per sphere up with a minimum damage of 2400 magic damage.

But they cost ∞ mana.
Karthus' ult has no cooldown.

But it now only hits enemies within a 600 yard range of Karthus, and only deals 100 damage +50 per rank.

Akali now has 50 charges for her ult, and gains 25 on kill or assist, with an extra 1 generating every 3 seconds. Adds 50 extra charges on ranking up. (rank 3 now has 150 charges)

But it cost her 100 hp per use

Nunu's consume now works on champions and towers.

But it deals magic damage instead of true damage and no longer heals.

Tryndamere's Undying Rage now refreshes all of his cooldowns on kill.

But it no longer grants aversion to death

Evelynns ult deals 90% of champions maximum health

But her ultimate's passive gives her -100 mpen.

Lee Sin has 12 item slots and starts the game with over 9000 gold.