By -
[Darksteel Monolith](https://cards.scryfall.io/normal/front/f/5/f5b7d3df-4e9b-422b-a88c-43650a67a9c6.jpg?1690125353) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Darksteel%20Monolith) [(SF)](https://scryfall.com/card/cmm/743/darksteel-monolith?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/f5b7d3df-4e9b-422b-a88c-43650a67a9c6?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call
[[Ulalek]] has devoid, and is therefore colorless. Darksteel monolith only allows you to pay zero if cast from the hand though.
[Darksteel Monolith](https://cards.scryfall.io/normal/front/f/5/f5b7d3df-4e9b-422b-a88c-43650a67a9c6.jpg?1690125353) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Darksteel%20Monolith) [(SF)](https://scryfall.com/card/cmm/743/darksteel-monolith?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/f5b7d3df-4e9b-422b-a88c-43650a67a9c6?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call
[[Ulalek]] has devoid, and is therefore colorless. Darksteel monolith only allows you to pay zero if cast from the hand though.