there is a way to check if booster boxes do, however
Card: 66/96 I Have This More From Gold, Silver, to a New World
It starts off at 3/3, but it gets a +1/+1 counter for every instant and sorcery it exiles with delve and every instant and sorcery that leaves your graveyard while it's in play
Japanese booster boxes are almost always guaranteed to include at least one card which is a Super Rare or higher rarity (including Ultra Rares and Special Art Rares)
Decklist: Vanille + Fang and Ragnarok in EDH Fang, Fearless l'Cie , Vanille, Cheerful l'Cie , Ragnarok, Divine Deliverance | Illustrations by ikeda_cpt Commander (1) Planeswalker (1) Creatures (18) Burnished Hart Cloud of Darkness Darkstar Augur Diamond Weapon Eternal Witness Exdeath, Void Warlock // Neo Exdeath, Dimension's End Fang, Fearless l'Cie Genesis Golgari Findbroker Golgari Grave-Troll Honest Rutstein Kagha, Shadow Archdruid Prosperous Innkeeper Reclamation Sage Sakura-Tribe Elder Summon: Titan Thrashing Brontodon Timeless Witness Instants (17) Abrupt Decay Airship Crash Assassin's Trophy Drag to the Roots Fake Your Own Death Feign Death Fight On
