When playing the deck, you want to focus on sticking permanents down that have landfall before you start using your fetchlands, and also on cards that give you double landfall triggers
Though its modest +1 only puts one +1/+1 counter on target creature, its -3 provides a creature with both evasion and a sizable offensive boost by providing both flying and double strike until the end of the turn
This, alongside a mana neutral rock like The Great Henge, can create infinite colorless mana
Considering Nalia herself is a Rouge, she meets 25% of the party requirements by herself
However, its now also great in Historic
The reason it's important to keep the card separate is to make it clear that it is the card that was drawn this turn before revealing it to miracle it