As long as you have five or more cards in hand, you can perpetually take extra combats and gain extra mana until you find the cards you need
We beat Dredge twice and Bant Spirits and UW Control once, while only losing to Eldrazi Tron is a really close three-game match, giving us a 4-1 record overall, which is very solid for a $60 deck
Gisa, Glorious Resurrector Gisa, Glorious Resurrector is cool in theory but paints a big enough target on your head that it rarely does the thing. People hate having their creatures exiled and theres usually a window between when those creatures get exiled and when Gisa reanimates them, so your opponents will usually pick it off before that happens
This can allow you the ability to quest without too much concern
These cards were expensive not because of demand but because the available supply was amazingly low
However, if you value having random artifacts, its actually not the worst