Its worth mentioning Imperial Seal here, as it does roughly the same thing, though it gives folks a whole turn cycle to mess with the top of your library
The spells you jump-start must be exactly two colors, which incentivizes you to find unique cards to play
Many of these platforms are also equipped to purchase unwanted cards from you, which is especially important if you are opening Japanese sets while hunting for a rare card
For instance, I could imagine a deck with four Relentless Dead, four Fleshbag Marauder, and three Sidisi, Undead Vizier as most of or the only Zombies
CORI-JP027 Kuroki Konton no Majutsushi Black Chaos (Black Chaos the Dark Chaos Magician) Level 8 DARK Spellcaster Ritual Effect Monster ATK 2800 DEF 2600 You can Ritual Summon this card with Ritual of Light and Darkness You can only use the 1st and 3rd effect of this cards name each once per turn