Doomsday Excruciator causes 67% CPU usage

**Describe the bug**
Doomsday Excruciator (#94) causes 67% CPU usage

**To Reproduce**
Steps to reproduce the behavior:
1. Have two AIs play each other, one using this monoblack deck:

```
[metadata]
Name=Black
[Main]
1 Abhorrent Overlord|PTHS|1
1 Archetype of Finality|BNG|1
1 Archfiend of Depravity|FRF|1
1 Archpriest of Shadows|MOM|1
1 Ascendant Evincar|PMEI|1
1 Beacon of Unrest|PRM|1
1 Black Knight|LEA|1
1 Black Market|MMQ|1
1 Bolas's Citadel|WAR|1
1 Butcher of Malakir|WWK|1
1 Cabal Stronghold|DOM|1
1 Crypt Ghast|GTC|1
1 Dark Impostor|AVR|1
1 Deathbringer Regent|DTK|1
1 Defiler of Flesh|DMU|1
1 Demonic Hordes|LEA|1
1 Doomsday Excruciator|DSK|1
1 Drana, the Last Bloodchief|SLD|1
1 Dread Presence|M20|1
1 Dread Shade|DOM|1
1 Elder Brain|CLB|1
1 Fated Return|BNG|1
1 Ghastly Death Tyrant|CLB|1
1 Gilt-Leaf Winnower|ORI|1
1 Gix, Yawgmoth Praetor|BRO|1
1 Grave Exchange|AVR|1
1 Harvester of Souls|AVR|1
1 Heartless Act|IKO|1
1 Ihsan's Shade|HML|1
1 In Garruk's Wake|PM15|1
1 Intellect Devourer|CLB|1
1 Invasion of Innistrad|MOM|1
1 Jet Medallion|TMP|1
1 Kaervek, the Spiteful|M21|1
1 Lashwrithe|NPH|1
1 Loxodon Warhammer|MRD|1
1 Magus of the Mirror|TSP|1
1 Massacre Wurm|MBS|1
1 Mind Shatter|MOR|1
1 Mortuary Mire|BFZ|1
1 Nighthawk Scavenger|ZNR|1
1 Nightmare|LEA|1
1 Ob Nixilis, the Hate-Twisted|WAR|1
1 Pestilence|LEA|1
1 Platinum Angel|MRD|1
1 Raving Dead|C14|1
1 Realmbreaker, the Invasion Tree|MOM|1
1 Reiver Demon|MRD|1
1 Seizan, Perverter of Truth|CHK|1
1 Shard of the Nightbringer|40K|1
1 Shard of the Void Dragon|40K|1
1 Sheoldred|MOM|1
1 Sheoldred's Edict|ONE|1
1 Sheoldred, Whispering One|PNPH|1
38 Swamp|LEA|1
1 Terror of Towashi|MOM|1
1 The Eldest Reborn|DOM|1
1 Uncle Istvan|DRK|1
1 Underworld Connections|RTR|1
1 Vengeful Pharaoh|M12|1
1 Vilis, Broker of Blood|M20|1
1 Yargle, Glutton of Urborg|DOM|1
[Sideboard]
1 Armory Automaton|C16|1
1 Asmodeus the Archfiend|AFR|1
1 Bitterthorn, Nissa's Animus|MOC|1
1 Black Sun's Twilight|ONE|1
1 Bloodsoaked Altar|M20|1
1 Brass Squire|MBS|1
2 Gray Merchant of Asphodel|THS|1
1 Hammer of Nazahn|PZ2|1
1 Jugan Defends the Temple|NEO|1
1 Koskun Falls|HML|1
1 Lord of the Pit|LEA|1
1 Palace Siege|FRF|1
1 Pox|ICE|1
1 Reckless Spite|TMP|1
1 Sorin's Vengeance|M12|1
1 Umbra Stalker|EVE|1
[Commander]
1 Drana, Kalastria Bloodchief|ROE|1
[Attractions]

[Contraptions]

```

2. Notice very laggy play and 67% CPU usage.

**Expected behavior**
No noticeable CPU increase.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Desktop (please complete the following information):**
- OS: Windows 11
- Browser: Chrome, but I'm using the Java desktop client so this info should be irrelevant.