Originally Posted by Hewn
Tri force is a solid item on Udyr. The art of getting kills is hard, you have to time your Tiger stance properly for that burst, but otherwise he isn't really good at getting killing blows, just training people or cleaning up fights.
I used to run standard tri force build, but have followed others footsteps in running an Innervating Locket. With his spam of abilities, the group potential is ridiciulous. Max Pheonix and Turtle, you can just stay in fights and be an amazing asset.
tri force and sheen don't quite work for tiger udyr, as it increases his damage by that 120% of his base, splits it into 1/3 of the damage and then only applies to the first hit
GRANTED, triforce will still proc properly in bear and turtle, but typically it just ends up reducing your kill potential early game
I believe madred's does this too, but haven't fully tested it yet (almost positive razor act's like this, but not sure on bloodrazor)