Nowadays, monocolor decks are the minority, so any sort of mana fixing is of the highest importance and Dual Lands are undeniably the best way to do that
Its a shame she wasnt around for War of the Spark (Which happened centuries after this set) where she could have shanked Nicol Bolas (She still could
Let's look at some of the awesome blue cards that give way to a winning strategy for this Commander deck
Through planeswalking, the Treefolk can deteriorate, and currently Wrenn is on her sixth host
Basically, you want to side in the package against the obvious decks like Burn and sometimes Affinity or Storm
Especially when you think about predecessors like Night Soil and Necrogenesis, which give you the token creature no matter which graveyard you dipped into, this seemed like a strange blow to the power level of a card thats supposed to be a deity