Against Impostor of the Sixth Pride, Faerie Seer, and Treetop Ambusher, its a cheap removal spell that later on you can use to add one extra point of damage when its needed
In a deck built around drawing cards, this could give Spider-Man 2099 a lot of power early into the game
Whenever a land's ability causes you to add one or more mana of the chosen color, add an additional one mana of that color
When Peer into the Abyss resolves, you are very likely to draw at least 30 cards, and if your commander Starscream, Power Hungry is on the board and you are the monarch, you're definitely blowing up one opponent's life
Nature's Rhythm This -cost sorcery will put a creature with X cost or less on the battlefield from your library, and then you can do it again for X and four green with Harmonize
Set this up preemptively for an impactful attack, or maybe as an edge case to to save an important creature from damage