Udyr's Pheonix Stance got 25% ap ratio, so that means when it's maxed out you will deal 200 + around 90 - 100 bonus damage from ap, each 4th attack, and with Malady and Guinsoo's Rageblade, and passive i think his AS will reach around 1.8000 that means around 300 damage each 2 - 3 second without auto attack and Malady's passive, with the active on Pheonix that hits 55 + 90 - 100 each second.

Calculation: If Enemy got 50% MR and Armor

AD: 200/100*50 = 100.
After 5 sec: 100*9= 900.
AP: 300*3+(145*5)+100=1725/100*50= 862

After 5: 900+862= 1762 dmg

Some of this is just wild guessing, but i have played one game with it, and it worked :)
And I'm too lazy to read what i have been reading so something may be wrong

It's tha shield!

Turtle's shield got a 50% ap ratio.

350ap/100*50=175

So you will get a spammable shield that blocks for 175 dmg ca.

Still this is just wild calculations and quessing, and i'm still too lazy to read what i have been writing

Hope you try this funny troll build that might work, GL&HF