Champions that need to be disabled or heavy nerfed for URF to become anyway fun to play:

1. Riven (she has a near Permastun and can dash forever, not to mention her AD scaling shield is absolutely broken without CD)
2. Shaco (AP Shaco just blinks in, throws Shiv, blinks out. There is no counterplay unless you supply us with unlimited pink wards)
3. Zed (Do I have to explain this? He can have 3 Shadows up...)
4. Fizz (24/7 invulnerability)
5. Jax (His immunity to Autoattacks combined with his burst and always up resistance bonus makes him insane)
6. Hecarim (Well... does this really need any explaining? https://i.ytimg.com/vi/zVHeQCM9rTg/hqdefault.jpg )
7. Nidalee (Spear Gatling gun plus no CD jumps.... and the TRAPS oh my god, the traps....)
8. Ryze (Remember how he can have one person in his cage forever in normal game? On URF he can do this with 3 people...)
9. Pantheon (The low CD stun + damage block is just not... just no...)
10. Blitzcrank. (no comment on this one...)
11. Sona (Early game bullies with long range are a problem overall in this mode)
12. Alistar (Just too much knockups and his ult is hell...)

Take these 12 Champions out of the game and we could have a blast playing URF.