Non-serialized cards are mechanically identical to their non-serialized variants
Well, mana spells are half the equation of a Storm deck, with the other half being card draw, which our commander transforms burn spells into
First and foremost, there's the card I found with the longest oracle text: Dance of the Dead
Spike Feeder still has to pay a counter to generate each new Heliod trigger, like Ballista, but unlike ol Walky B, theres no inherent way to convert that loop into victory
It can also be useful in Commander to clear a full stack since you can choose different targets for each copy, potentially letting you stop multiple players
(You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.) As long as this card is in your graveyard, if you would learn, you may instead return this card to the battlefield