Skull Storm 
Sorcery
$0.88 #12953 0.47 8.1 years
When you cast this spell, copy it for each time you've cast your commander from the command zone this game.
Each opponent sacrifices a creature of their choice. Each opponent who can't loses half their life, rounded up.
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Cards similar to Skull Storm expected a card that isn't here?
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Empyrial Storm84%
$0.40↓#18692↓0.33↓8.1 years
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Fraying Omnipotence79%
$0.75↓#8621↑0.85↑8.1 years
"Each player loses half their life, then discards half the cards in their hand, then sacrifices half the creatures they control of their choice. Round up each time."
Rush of Dread79%
$0.37↓#5144↑0.452.4 years↓
"+ 
— Target opponent sacrifices half the creatures they control of their choice, rounded up."
— Target opponent sacrifices half the creatures they control of their choice, rounded up."
Hatut Zeraze Strike Force78%
$0.27↓#18306↓0.00↓0.2 years↓
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Genesis Storm78%
$0.65↓#130010.07↓8.1 years
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Echo Storm78%
$0.25↓#115520.17↓8.1 years
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies."
Fury Storm78%
$4.88↑#7385↑0.508.1 years
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies."
Pox76%
$1.44↑#9753↑1.27↑31.3 years↑
"Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time."
Ancestral Communion74%
$0.29↓#16459↓0.00↓0.2 years↓
"When you cast this spell while you control your commander, copy this spell. You may choose a new target for the copy."
Summon: Anima74%
$0.21↓#6681↑0.25↓1.2 years↓
"Each opponent sacrifices a creature of their choice and loses 3 life."
Blighted Fen74%
$0.11↓#124040.11↓10.9 years↑
"
, 
, Sacrifice this land: Target opponent sacrifices a creature of their choice."
, , Sacrifice this land: Target opponent sacrifices a creature of their choice."
Social Snub73%
$0.13↓#20405↓0.00↓0.4 years↓
"When you cast this spell while you control a creature, you may copy this spell."
+1 more matching line
Agent of the Fates73%
$0.27↓#147670.81↑12.9 years↑
"Whenever you cast a spell that targets this creature, each opponent sacrifices a creature of their choice."
Vona's Hunger72%
$5.20↑#3854↑0.458.6 years
"Each opponent sacrifices a creature of their choice. If you have the city's blessing, instead each opponent sacrifices half the creatures they control of their choice, rounded up."
Origin of Black Widow72%
$0.38↓#24375↓0.00↓0.2 years↓
"Each opponent sacrifices a creature of their choice."
Oath of Liliana72%
$0.34↓#108920.12↓10.1 years↑
"When this card enters, each opponent sacrifices a creature of their choice."
Wing Shards72%
$0.10↓#143830.10↓23.3 years↑
"Storm When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies."
+1 more matching line
Legate Lanius, Caesar's Ace72%
$0.33↓#110140.68↑2.5 years↓
"When this card enters, each opponent sacrifices a tenth of the creatures they control of their choice, rounded up."
Myrkul's Edict71%
$0.21↓#6032↑0.61↑4.2 years↓
"Each opponent sacrifices a creature of their choice."
Ultimo, Civilization's End71%
$0.23↓#20813↓0.00↓0.2 years↓
"When this card enters, each opponent sacrifices a creature of their choice."