This is done by taking cards out of your main deck and inserting cards from your sideboard
The Remora was also used in Extended for a little while as a sideboard card against Pox decks
Adriana, Captain of the Guard Adriana, Captain of the Guard is one of the reprints in this set
Commander, at its core, is about creativity and fun - more so than any other MTG format - so you do you
You can constantly remove the second counter from The Eldest Reborn to force your opponents to discard a card on every one of your turns, turn Binding the Old Gods into a repeatable Maelstrom Pulse each turn, or get a steady stream of card draw or +1/+1 counters from The First Iroan Games
Any time you add a lore counter to a Saga, youll then trigger the next ability in line, and so on, until you sacrifice it at the end of the third