Primal Command Tutoring a creature is only a fourth of your options with Primal Command
There are no hardline rules when it comes to the exact number of given creatures in a deck, so use 40 as a general guideline, not a hard and fast rule
Since it's a 3-mana land destruction spell, could it be viable for land destruction depending on the environment
Not high powered compared to other effects but when you are mostly about the scaling effects or raw numbers this is a commonly played card
A two mana lord which buffs all your creatures is a pretty standard rate, but Lord of Atlantis does much for you than that: he also gives everything islandwalk
People are very excited, but Im personally a bit more skeptical as you need a second land of the right color (and type!) if you want to get the second color from these, which is likely your splash color