Cultural Exchange [Odyssey] Cat Elemental create 15 1/1 green Eldrazi

create 15 1/1 green Eldrazi Squirrel Scion creature tokens with "Sacrifice this creature: Add G or B"

Set: Mystery Booster 2 Type: Instant Rarity: Common Cost: {1}{B} Add {B}{B}{B}

the line unbroken since the calamity that brought such monsters to our shores

For each of those cards

Set: Throne of Eldraine Type: Legendary Creature — Merfolk Wizard Rarity: Rare Cost: {2}{U} This spell costs {1} less to cast for each artifact you control

Cultural Exchange [Odyssey] Cat Elemental create 15 1/1 green EldraziSet: Odyssey Type: Sorcery Rarity: Rare Cost: {4}{U}{U} Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.)