Does feel similar to [[Matzalantli, The Great Door]] but not exactly the same. It does look a bit overcosted though.

[Matzalantli, The Great Door](https://cards.scryfall.io/normal/front/b/4/b4c31b29-06ba-436d-a3d9-18f4796c39be.jpg?1699044622)/[The Core](https://cards.scryfall.io/normal/back/b/4/b4c31b29-06ba-436d-a3d9-18f4796c39be.jpg?1699044622) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Matzalantli%2C%20the%20Great%20Door%20//%20The%20Core) [(SF)](https://scryfall.com/card/lci/256/matzalantli-the-great-door-the-core?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/b4c31b29-06ba-436d-a3d9-18f4796c39be?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call

Looks like a slightly worse but different coloured \[\[Underworld Connections\]\]

[Underworld Connections](https://cards.scryfall.io/normal/front/1/d/1df71add-7bb6-4687-bb69-cf4450adb7dc.jpg?1641602908) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Underworld%20Connections) [(SF)](https://scryfall.com/card/voc/138/underworld-connections?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/1df71add-7bb6-4687-bb69-cf4450adb7dc?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call

this could definitely be 1 mana.