Horsemanships unique evasion means your knights are suddenly charging past those blockers, and it works better than a Levitation in terms of turning your board into an instant threat
A key observation about this ability is that you create the Treasures whether you exile it or not , because it does not contain the language "...exile it
The winner searches their library (in the resumed main game) for two cards, puts those cards into their hand, then shuffles their library
Manifest Dread improves that by looking at the top two cards, choosing one to become the face-down creature, and putting the other into your graveyard
As such, the ever-present core of any Lands deck is the relatively small class of cards which grant additional land drops per turn
Some good tricks to consider are the bloodrush cards, which channel a creature in your hand into a pump spell, Ghor-Clan Rampager, and Rubblehulk are good examples, and cards like Balduvian Rage, Tyvar's Stand, and Downhill Charge