it gives a sense of scale to Zendikar and retroactively nods to how giant monsters like the eldrazi can manifest and still leave room for all the denizens to fight back
I have made it sound far weaker than it is by exaggerating the numbers significantly to make them neat
The Masamune powers up Sephiroth, basically, but can it do much outside of that
The Motherlode's reflexive triggered ability prevents all creatures without flying that player controls from blocking that turn, including creatures that lose flying after the ability resolves as well as creatures without flying that enter the battlefield or come under that player's control later in the turn
That way, players can start attacking very early on with Razor Leaf, as it requires just two Grass Energy
While removal wont do the trick against Bogles decks, discard spells like Thoughtseize are very effective at disrupting their Voltron game plan by nabbing a crucial Daybreak Coronet, for example