it is a perfect setup card
If a creature has the Enrage keyword it will do something every time it is dealt damage
Typically, we see one-mana cantrips being played very often in Modern, Legacy, Historic, and really any format that has a solid density of them, because they're such good velocity tools for finding lands or action when needed
Quarter Century Stampede will be your last chance to get some of your all-time favorite cards as Quarter Century Secret Rares before this spectacular, shining rarity is gone forever
We also have the just printed uncommon Morbid Opportunist that only works once/turn as its condition
Whenever you use one of the new bending mechanics like water, earth, fire, or air, you get to draw a card, which is one of the best things you can do in Commander