But for a 5-mana commander, Id prefer a card that stands on its own and doesnt require other cards to do things after it enters
These are all cards you should seriously consider running in Commander, in spite of the fact that they are from one of the worst sets of all time
From PuPu UFO, Goobbue Gardener and Torgal, A Fine Hound through to Ignis Scientia, Prishes Wanderings, Summon: Fenrir and Blitzball, I cant remember another format with so many ways to ramp at two and three mana
Rankle, Master of Pranks Rankle, Master of Pranks has a modal combat damage trigger that affects everyone, yourself included
Tower over the rest of the food chain with Ghalta and let high-power creatures run wild on the battlefield