Delve and taxing effects

[maximuscesar]

When a taxing effect like thorn of amethyst is in play I should still be able to cast my delve spells by simply exiling and extra card from the graveyard (if available).

[Alex-Vasile]

Are you saying that you're unable to use delve in order to pay off the additional cost added by [[Thron of Amethyst]]?

What delve card did you experience this with?

[maximuscesar]

Are you saying that you're unable to use delve in order to pay off the additional cost added by [[Thron of Amethyst]]?

What delve card did you experience this with?

Exactly

[Alex-Vasile]

[[Thorn of Amethyst]]

[github-actions[bot]]

Thorn of Amethyst - (Gatherer) (Scryfall) (EDHREC)

{2} Artifact Noncreature spells cost {1} more to cast.

[Alex-Vasile]

What delve card did you experience this with? (in case that matters)?

[maximuscesar]

Murktide Regent

[Alex-Vasile]

[[Murktide Regent]]

[github-actions[bot]]

Murktide Regent - (Gatherer) (Scryfall) (EDHREC)

{5}{U}{U} Creature — Dragon 3/3 Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Flying Murktide Regent enters the battlefield with a +1/+1 counter on it for each instant and sorcery card exiled with it. Whenever an instant or sorcery card leaves your graveyard, put a +1/+1 counter on Murktide Regent.

[maximuscesar]

I'm sorry, it was a [[Murktide Regent]] above a [[Sphere Of Resistance]] (actually, it were two spheres if it does any difference)

[github-actions[bot]]

Unable to retrieve information for "Murtide Regent"

Sphere of Resistance - (Gatherer) (Scryfall) (EDHREC)

{2} Artifact Spells cost {1} more to cast.