New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
Sea of Glass is a wop-wop in T1, along with the entirety of the heavenly temple. So far its only real role I can see is empowering Martyrs against Pharisees.
I've found Heavenly Temple to be very effective if it's being taken out of my deck to free up a card slot for something that makes sense in T1 That is to say, yeah I'd probably run Sea of Glass if I were running Heavenly Temple, I'd just never do that in T1.
Well since Master Q plugged Ends of the Earth, I'll suggest you should also add Not Alone...especially if you're not running You Will Remain.