How do Greedy Compulsion cards clear, and how much damage reaches Gravehold when they exhaust you?

Question

Accepted Answer

Both Compulsion cards clear at once when you gain the highest-cost spell. Each deals 2 damage to Gravehold in place of Unleash twice, and any excess damage still goes to Gravehold. This comes from a post reporting the publisher's answer.

Aeon's End: War Eternal

How do Greedy Compulsion cards clear, and how much damage reaches Gravehold when they exhaust you?