In competitive play you'll see less clown cars and bumper cars, and the race is often over before slower entrants have even gotten up to full speed
Its only issue is that three-color identity here for Commander, but if you are running them, why not run it too
This is not the normal Magic mechanic you are looking for
I would definitely recommend Burgeoning, as in play-groups of 4 or more this grants you much more of an advantage than Exploration does, though it wouldn't hurt to have both in here either
Theyre powerful cards, and only one can be played per turn unless a player has another card with the ability to allow them to add more Supporters during their turn
Artifact Invasion of Kaldheim (As a Siege enters, choose an opponent to protect it