Combine the two, and you get the LCARS shock lands
The contents of Secret Lair x Hatsune Miku: Sakura Superstar are: Shelter Miku, Lost but Singing (Azusa, Lost but Seeking) Miku, the Renowned (Feather, the Redeemed) Inspiring Vantage Miku's Spark (Chandra's Ignition) Harmonize Of the six cards in the drop, half of them are worth $5 or more even in their basic printing so you expect Miku, Lost but Singing, Mikus Spark, and Miku, the Renowned to have particularly high resale value (thats assuming, of course, youd be willing to part with them)
But thats not necessarily a bad thing, because you have the chance to appeal directly to Commander players with new and powerful designs without frustrating Standard players or have the cards become very expensive for Modern or Standard
Sanctum of Stone Fangs, Reckless Fireweaver and Anje, Maid of Dishonor all help us to achieve this, while Cryptolith Fragment and the Leechridden Swamp in our mana base can do the same thing
Ancestral Recall
If the card has any mandatory additional costs, such as that of Momentous Fall, you must pay those to cast the card
