In fact, some of the best commanders in this category dont have any significant abilities themselves but instead shine by leveraging other permanents abilities
Its hard enough for tribal decks to overcome boatloads of removal, but Goblin Chainwhirler is just rude
Once the creature leaves the battlefield, the one that returns is a new creature and comes complete with its standard text box
(Choose any number of permanents and/or players, then give each another counter of each kind already there.) Target creature phases out
Plus, gently milling stuff is great at ending tricks like a Sensei's Divining Top on a library or tutors that put the card on top
Soundwave, Sonic Spy's triggered ability can target only an instant or sorcery card with mana value exactly equal to the amount of damage dealt to the player by creature tokens you control