Your opponent cannot banish cards from your GY
place it in your Spell & Trap Zone as a face-up Continuous Trap
Optimus Prime, Hero resists effects like board wipes and combat damage, returning transformed as Optimus Prime, Autobot leader to stay in the fight
There are thousands of cards out there, and it can be overwhelming
If an exhaust ability of a permanent is activated, and then that permanent leaves the battlefield and returns to the battlefield, it becomes a new object so its exhaust ability can be activated again
While a list of the hundred best Commander cards of all time would dovetail with this one rather nicely, the quirks of the format (Highlander, banned list, bigger decks, larger life totals, etc.) would result in some changes