Do not be afraid to try different styles until you find one that satisfies you
Aragorn, the Uniter is the commander that will let you play all other Aragorn cards too, and they all work well together
For six mana, you get a 6/6 Artifact Creature with both deathtouch and lifelink
Our MTG colors guide has more detail, but here's a rough idea of what each color is best at: White - protection, small creatures, life gain Blue - card draw, counter spells, hard-to-block creatures Red - fast creatures, direct damage, temporary power Black - removal, sacrifice, reanimation Green - ramp, big creatures, enabling other colors It's quite easy to figure out what colors you want to play, but figuring out how many colors is more of a challenge