Seems very casual to me, might post in casual for more help.
This is basically a Legacy/Extended Deck that your porting over using Nomads/Shaman to Pump Task Force/Daru Spiritualist and then use Worthy Cause/Starlit Sanctum.
Seems way too slow to be competitive, since your already in Blue consider a heavier investment to add counters/draw & tutors.
Armageddon does little in Vintage, Wall of Glare is very close to useless in Vintage (well I guess it's not bad vs Ichorid for delaying one turn), Reya Dawnbringer is too slow, Ajani Goldmane seems out of place, he is just a very slow win more card, Boon Reflection seems extraneous, if you are gaining life, aren't you already going to gain infinite? Pearl Medallions are maybe a budget consideration but Sapphire/Pearl/Lotus/Sol Ring are needed as a minimum. No disruption means your going to have a hard time racing.
ya kinda, wanted to try doing a mono white verson, kinda didnt know how to go about doing it. so i went with using the Life deck as a base of where i wanted to go. well the upside of the wall is, with the wall of glare i can do a few things like using the shaman to allow me to soak creature dmg. i just want to slow them a few turns to bring out eather the avatar or ajani's token. was thinking through the use of dmg prevention.