Kassadin buffs

Q: Shield now shields 50/90/130/170/210 (+70% AP) for 3 seconds from 40/70/100/130/160 (+30% AP) for 1.5 seconds.

E: Now deals 100/140/180/220/260 damage from 80/105/130/155/180.

1. His shield should do more than stop a little damage. Shields don't last long, and that puny shield doesn't even last 2 seconds. Let alone deflect any damage, magic or otherwise.
2. His E should deal the amount of damage it should. Not some poke with a slow. It costs 80 mana, so it should pack a punch when used after 6 other spells have charged it.

Kassadin use to have a lot of mobility. Now, he has a timer on his R, that prevents constant transport. It also stacks in mana to prevent constant use.

Other than that, he has no other mobility.