When Gerrard dies, you can choose to exile him, returning all creatures and artifacts that end to the graveyard this turn back to the battlefield
The Mage offers some security against awkward lands and some disruption potential on an easy to cast body that ensures you won't ever have a dead spell
If you've read this far, then you know I'm going to mention Krosan Grip, because it has Split Second and allows you to destroy pesky artifacts and enchantments without letting your opponent get one last use out of it
The Apex cats (Nethroi, Apex of Death, Vadrok, Apex of Thunder, and Snapdax, Apex of the Hunt) all have mutate, but they cant be played together unless theyre in a deck lead by another commander
Masters of multiplayer understand that you want multiple ways to sacrifice creatures, in case an opponent tries to steal your commander or lock it out of play with a card like Lignify