Hero Spell triggering

I need help with the hero below

Werebeast- Skinned Beastmaster
Abilities:
:\ Bearform - transform the hero into a bear giving him increased attack, armour and hitpoints
Level 1 10% bonus get an extra 10% bonus for each level after
:\ Wolf Form - transforms the hero into a wolf giving him increased attack, speed and attack speed
Level 1 10% bonus get an extra 10% bonus for each level after
o_O Lycanthropy - increase the bonus of the above spells
Level 1 5% bonus get an extra 5% bonus for each level after
:) Tame - gain control of target non hero if there level is * of your hero
* is dependant on level of skill
:( Ultimate - haven't worked out yet need ideas possibly a aura

Each ability has ten levels
I need help triggering the first three abilities and possibly the ultimate one
What I really want is to just change the model to a bear disable his other abilities and give him the bonus. I'd like it so he can still get the bonus from his items.

-Bear form:Custom 1 new metamorphosis then make a trigger like this:
====Bear form=====
Event: a unit begin casting an ability
Condition:ability being cast equal to bear form
Action:
+If level of Bear form for triggering unit equal to 1 then create 1 unit of type[which unit u want ^^] for owner of triggering unit at position of triggering unit.
-If owner of last created unit equal to owner of triggering unit then add ability damagebonus to last created unit
-Unit group-Pick all unit of type own by triggering unit do Make picked unit Roar.
-Unit group-pick all unit of type own by triggering unit do remove picked unit
/Damagebonus is a variable ability/->Create 10 roar ability with different damage bonus if u want make this spell 10 lv ^^
*Wolf form change the ability to berserk is ok
*Lycanthropy u must create a trigger like this
Event:Unit learn a skill
Condition:Skill learned equal to Lycanthropy->may i type wrong please check this carefully ^^
Action:
-If level of Lycanthropy for triggering unit equal to set Damage bonus=roar 15%
-If level of Lycanthropy for triggering unit equal to set Atk speed bonus=berserk 15%
....................
-Err..I not good with english so i hope it can help u a little ^^ and i think those skill u make for druid in diablo right??if it right then the ultimate skill must be the great strom with blizzard and flame strike that destroy everything ^^

Its kind of based of the druid in diablo 2 but this is for a completely diferent game.
And for the ulitmate ability I was thinking of a ultimate transform which transformed the werebeast into a creature depending in which other skill they had the highest level in. Oh and thanks.

For the first 2 try to use the Avatar ability
For the third use the Engeneering Upgrade ability

or the Druid Abilitie....

If you whant to give a percentage bonus the druid ability wont work