If you are regularly able to get the five colors of mana with stuff like mana rocks and lands, then they are all reliable 5-drops, and that increases their value appreciably
As this card levels up, youll first be able to look at the top card of your deck, and then eventually cast those cards at a cheaper rate than playing spells from your hand
Xiahou Dun, the One-Eyed is a rare commander that can sacrifice itself, and this one is for a very useful gravedigger effect
(2/2/2024) If the second triggered ability is countered, the card can't be cast
If youre playing cards like Laboratory Maniac, Jace, Wielder of Mysteries, or Thassas Oracle, you can turn the downside of potentially getting milled out into an advantage