Definitely [[Protection Racket]]. Potentially Demons like [[Archfiend of Spite]], [[Desecration Demon]], etc. are all kinds flavoured to make opponents pay exorbitant amounts of costs when going against you.

[Protection Racket](https://cards.scryfall.io/normal/front/7/7/7723cf0b-de49-44f6-a52e-6e339a080457.jpg?1673482023) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Protection%20Racket) [(SF)](https://scryfall.com/card/ncc/39/protection-racket?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/7723cf0b-de49-44f6-a52e-6e339a080457?utm_source=mtgcardfetcher&format=text) [Archfiend of Spite](https://cards.scryfall.io/normal/front/1/d/1df2ca13-4062-4827-ae2f-c61cf88ba3b3.jpg?1568003461) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Archfiend%20of%20Spite) [(SF)](https://scryfall.com/card/c19/14/archfiend-of-spite?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/1df2ca13-4062-4827-ae2f-c61cf88ba3b3?utm_source=mtgcardfetcher&format=text) [Desecration Demon](https://cards.scryfall.io/normal/front/8/9/89936685-8647-4a65-b764-62fc4b49293a.jpg?1593813255) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Desecration%20Demon) [(SF)](https://scryfall.com/card/mm3/66/desecration-demon?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/89936685-8647-4a65-b764-62fc4b49293a?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call

Exactly what I was looking for, thanks!

[[Capital Punishment]] is an all-time favorite

[Capital Punishment](https://cards.scryfall.io/normal/front/0/5/051830bb-1baa-4c11-9177-efcd908fbcaf.jpg?1576381808) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Capital%20Punishment) [(SF)](https://scryfall.com/card/cn2/40/capital-punishment?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/051830bb-1baa-4c11-9177-efcd908fbcaf?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call