The first ability is definitely the strongest, but cards that reward you for taking basic game actions tend to accrue loads of value in Commander
"Nowadays if you want a Forcefield in a PSA 9, it's going to cost you $1,000 to $1,500," noted Chang
If you attack with two copies of Werewolf Pack Leader, each of their abilities trigger and you get to draw two cards from a single attack
If I am running Zealot in that situation, I can block the Bloodtithe Harvester, removing a chunk of the pressure on my life total, giving me room to eventually take over the game with my higher value cards
Tales of Green and Black
Then once you start hitting bigger powers, you are grossing tons of cards and netting many too