Both are quality decks that I enjoyed trying out, but neither quite reach the heights of some of my favorites
All Man-o'-Wars Visions saw the printing of many good creatures with Enters abilities, including the original 2/2 tempo machine for three mana, Man-o'-War
If you can reliably give haste to other creatures, this Tyranid can continue to provide value over the course of the game
against aggro you're often singing early with just one character, which means fewer options per turn
Plus, in a fail case this gives you a passable Flying body
For example, Mox Jet adds one black mana to the mana pool when tapped, allowing for such an extreme mana acceleration that it gives players an unfair advantage in play