so I'm finally reading the patch notes I missed and I stumble accross this gem:
Tryndamere
Spinning Slash
* Scaling adjusted to 1.0 bonus Attack Damage from 0.5 total Attack Damage (still scales with AP)
"still scales with AP".
<3 Riot.
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Eff_Dee
http://img.imgcake.com/nio/9fdpngys.png