If you want to be completely locked to the theme, go ahead and build it like this, but know you're intentionally building a sub-optimal version of the deck because of it
I really appreciated the reprints in the set, namely Cavern of Souls among others
Jon Irenicus, Shattered One T he Big Bad of BG2 himself
The important questions are whether it replicates the fun of the tabletop game - at least for the rank and file of casual players like me - and whether its a good PC game
Its role now will be lots of little bonus mana advantages adding up over many turns, as opposed to the old days where it was used to cast Primeval Titan on turn three or some other unholy thing
Potential Additions for Lifegain Lunar Convocation If you're playing against decks with a lot of removal spells, Ruin-Lurker Bat If you want to move toward a Bat typal deck, this is a great option