Vicious Betrayal 
Sorcery
$0.19 #28772 0.25 22.3 years
As an additional cost to cast this spell, sacrifice any number of creatures.
Target creature gets +2/+2 until end of turn for each creature sacrificed this way.
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Cards similar to Vicious Betrayal expected a card that isn't here?
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Bone Splinters92%
$0.03↓#5966↑0.55↑17.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Tendrils of Despair91%
$0.16↓#268170.60↑29.2 years↑
"As an additional cost to cast this spell, sacrifice a creature."
Demon of Catastrophes90%
$0.31↑#15129↑0.208.1 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Launch Party89%
$0.09↓#262160.06↓13.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Eliminate the Competition88%
$0.14↓#10809↑0.00↓9.9 years↓
"As an additional cost to cast this spell, sacrifice X creatures."
Worthy Cost88%
$0.30↑#5698↑0.191.4 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Ritual of the Machine88%
$9.02↑#18193↑0.53↑30.2 years↑
"As an additional cost to cast this spell, sacrifice a creature."
Tormented Thoughts86%
$0.08↓#230800.60↑12.3 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Call for Blood86%
$0.06↓#290470.3521.6 years
"As an additional cost to cast this spell, sacrifice a creature."
Phyrexian Tribute86%
$2.27↑#21899↑0.11↓29.9 years↑
"As an additional cost to cast this spell, sacrifice two creatures."
Wicked Reward85%
$0.12↓#297270.2529.8 years↑
"As an additional cost to cast this spell, sacrifice a creature."
+1 more matching line
Altar's Reap85%
$0.18↓#4428↑0.2314.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Fiery Conclusion85%
$0.05↓#22932↑0.00↓20.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Corrupted Conviction85%
$0.40↑#596↑0.10↓3.4 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Village Rites85%
$0.32↑#202↑0.09↓6.2 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Skulltap85%
$0.16↓#18967↑0.56↑23.3 years↑
"As an additional cost to cast this spell, sacrifice a creature."
Severed Strands84%
$0.05↓#13041↑0.69↑7.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Bankrupt in Blood84%
$0.24↑#12567↑0.00↓7.6 years↓
"As an additional cost to cast this spell, sacrifice two creatures."
Grafted Identity84%
$0.21↑#19042↑0.36↑4.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Commander Greven il-Vec84%
$2.90↑#264400.05↓28.9 years↑
"When this card enters, sacrifice a creature."