Proposed Galio Rework

All in all i think galios kit is fine but could use a bit of tweaking so heres what I've come up with with this rework im mostly trying to rework him into more of a mage than a tank.

Passive Runic Skin: Galio gains magic resist equal to 20 percent of his ap. Pretty much his current passive just flipped this will give him more of an anti mage status but giving him space to work well with ap items.

Q: Resolute smite: Galio fires a concussive blast at the target area, dealing magic damage to enemies hit and Slow icon slowing them for 2.5 seconds. this is the same thing as his current q i feel like keeping his primary damage ability is a good idea

W: Sentries Resolve: Galio shields himself for 1.5 seconds if the shield is not broken it will burs dealing damage in an aoe around him, if the shield is burst galio takes reduced damage for the next second.

E: Sacred Wind: galio dashes to target location dealing small damage in an aoe at the end of the dash. Galio leaves a trail behind him giving allied champions bonus move speed and slowing enemy champions.

R: Idol of Durand: Galio turns into a statue and channels for 2 seconds, halving incoming damage and Taunt icon taunting nearby enemies for the duration, which they cannot mitigate with crowd control reduction. Idol of Durand can't be cancelled by movement commands for the first 0.25 seconds of its duration if it strikes at least one enemy champion. When the channel ends, Galio bursts out of his statue form and deals magic damage to nearby enemies, increased by 10% for each basic attack he received while channeling, up to a maximum 80% increase. If the channel is canceled or interrupted, Galio deals magic damage in a smaller radius.

I would really like thoughts and opinions on this design so please comment.