It combines Leyline Tyrants leave trigger with the mana making you see on the likes of Birgi, God of Storytelling
This has included the ability to battle other trainers, build new decks, and (most importantly/potentially problematically) feel that serotonin hit of ripping a new pack of cards to add to the collection
On third-party websites, the Unified Minds Pikachu goes for around $1-2, while the McDonald's non-holographic Pikachu goes for around $4-10, and the McDonald's holographic Pikachu card goes for anywhere from around $45-350, depending on the card's condition and/or PSA grade
In reality this has a bit of a 4 turn clock and only affords ongoing value if you have more removal
The sleeves we tested had slanted seams and did not fit well, leading to an almost unusable end product
In Temur ramp decks, its a game-ending top-end threat that floods the board with value in one explosive turn