OK, this is short minor rework of tristana, inspired by Thok Pwnage. I am scrub, so feel free to criticize.
Aspd per level decreased from 4% to 3%. (Total aspd decrease of 18% at level 18).
AD tristana changes - minus maximum range(now 635 on lvl 18), minus attack spead per level but new passive that provides for it, weaker aspd steroid @18, +5 magic damage on every attack + 50% bonus ad scaling on ultimate, cooldown on ultimate back to 60.
AP tristana changes - minus maximum range of E and ult, +10% ap scaling on W, -50% AP scaling on R, autoattacks now deal 5(+15% AP) magic damage(E passive).
Both: Bonus cooldown decrease of other spells on kill - 2 seconds. Much lower knock back distance of ult (by 200/250/300 distance units). - 50 damage on ultimate.