Jumping from 3 mana to 6 is pretty powerful, and Gwenna lets you activate the abilities of creatures
Opt you cast at your leisure and at the low cost of one mana it should barely ever be detrimental or even noticeable on your curve which is much more so the case with the slightly more potent sorcery alternatives that get in the way of things more
Lords are less essential in soldiers as white has so many types of Crusade effect but there are quite a diverse selection ranging from two drops like Veteran Amorsmith and Auriok Steelshaper to high end one man armies like Captain of the Watch
If you no longer control three permanents you don't own as it resolves, you won't draw three cards
Landfall triggers, Elf payoffs, steady value Nissa blends it all together, which is why shes a great pick when youre looking at best Elf commanders in MTG
While his design might look coherent on the surface, his minus encourages deckbuilding that makes his +1 irrelevant, which in turn leads to choice between his plus and minus void since his +1 is blank
