The combination of Witch's Oven and Cauldron Familiar from Throne of Eldraine was out in the real world and had kind of put the damper on the appeal of sacrificing creatures to make Food tokens
The cost is fairly low and honestly pays for itself if youre able to hit on just one Pokemon Center ETB every set release and restock
Wargamer has a dedicated guide to Pokmon card rarity covering the basic rarity levels of cards you can open in any pack

Number of cards: 103 Release date: February 8, 2012 Abbreviation: NXD B & W: Dark Explorers : Hexagon with a half-circle carved from the top Number of cards: 111 Release date: May 9, 2012 Abbreviation: DEX B & W: Dragons Exalted : Spiral symbol Number of cards: 128 Release date: August 15, 2012 Abbreviation: DRX Dragon Vault : Dragon body symbol Number of cards: 21 Release date: October 5, 2012 Abbreviation: DRV B & W: Boundaries Crossed : 6-pointed star overlapping half of a hexagon Number of cards: 153 Release date: November 7, 2012 Abbreviation: BCR B & W: Plasma Storm : Black shield-symbol with white rays in the center Number of cards: 138 Release date: February 6, 2013 Abbreviation: PLS B & W: Plasma Freeze : Black hexagon with 3 pieces taken out on the left side Number of cards: 122 Release date: May 8, 2013 Abbreviation: PLF B & W: Plasma Blast : Black shield-symbol with 3 curves along the top and sides Number of cards: 105 Release date: August 14, 2013 Abbreviation: PLB B & W: Legendary Treasures : Open hexagon with spikes on the right side Number of cards: 140 Release date: November 6, 2013 Abbreviation: LTR Advertisement The XY series includes Pokmon from Gen VI following the release of the X and Y games

Without them, I don't think my music would be what it is now