Since it's a mana cheap instant, you can do this in response to targeted or sweeping removal to get cards, as a sacrifice or it can send something to your graveyard about to get exiled by Swords to Plowshares, or to get value out of a chump blocker about to die anyway
You might open one, and I hope you understand what incredible odds you beat to do so
100-Card Singleton: Your deck must contain exactly 100 cards, including your commander
Yet another group of cards released in Pantheon have been the fishing champion Heralds: These cards are all champions that when played, allow you to look at the top 3 cards of your deck, draw a card from that alignment, and then banish the rest, This is a very powerful ability that lets you get what you need, when you need it, and most likely will at least replace the card you just played from your hand