As it is, its really good in squirrel decks like Chatterfang or Hazel, and you can even conjure it with Euru, Acorn Scrounger on MTG Arena
Fortunately, there are ways to draw out the support of our lands and mana more quickly, often referred to as mana ramp
II Create two 1/1 black Assassin creature tokens with menace
Youll be the monarch, so you can attack with impunity, and since Aragorn has vigilance and lifelink, youll have some protection from the counterattacks
Just keep in mind your budget and the fact that you can more slowly accumulate gold that can purchase extra packs and cosmetics, if you have the patience
These are more strictly defined power levels that are fairly comprehensive, though they arent always going to suit the style of play you might want