This probably only matters for your high value listings but lowering the price after a month is almost always a great way to reinvigorate that listing
Brokkos, Apex of Forever As long as you have a non-human creature on the battlefield, Brokkos, Apex of Forever cant die (although it can be exiled sometimes)
Jacked Rabbit is a creature you want to ensure always has a lot of +1/+1 counters on it, as this will keep giving you 1/1 Rabbit tokens for each attack, and with high stats, it won't be in danger during combat
Lets do a little Prototype lightning round of the better examples to kick things off: Autonomous Assembler Likely better in multiples, which doesnt really do much for us here in Commanderland outside of goofball Assembly-Worker decks
Building your deck can be challenging, but there's no reason you have to do it painfully, card by card
If there ever was a perfect card design, this is one of them.