Hello ! I'm sorry, but I don't speack english very well.
So, I like your deck but I think you can put over protections spells in your deck to protect your voltron/commander no ? For example spells like :
heroic intervention,
destiny spinner,
sterling grove, privilieged position, etc.
And be careful to your mana base. Looks like you're running out of white mana.
Anyway, nice deck, and good luck with your games