how many card types are in mtg cards there Explained: Everything You Ever Needed to Know How Many MTG Cards Are

However, it's important to understand that a commander deck's utility is almost entirely decided by its commander - far more so than the average MTG deck, commander decks center on the effective use of a single card

Retrieved 23 November 2020

If a permanent with an exhaust ability that's already been activated leaves the battlefield and then returns, it's a new object with a new instance of its exhaust ability

The granted abilities effectively use "this permanent" rather than "[that card's name]," so you treat the abilities as though they were printed on the creature that gained the ability

The trade seems more than worth it, and it feels like the perfect addition to my Curve Keeper deck

Where it can draw some cards and add in some value is with a creature like Bloodbraid Elf