Vicious Betrayal 


Sorcery
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 that do something similar expected a card that isn't here?
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Corpse Cobble 100%
$0.18#19023
"As an additional cost to cast this spell, sacrifice any number of creatures."
Torgaar, Famine Incarnate 94%
$0.40#11546
"As an additional cost to cast this spell, you may sacrifice any number of creatures. This spell costs {2} less to cast for each creature sacrificed this way."
Extus, Oriq Overlord // Awaken the Blood Avatar 94%
$0.53#11458
"As an additional cost to cast this spell, you may sacrifice any number of creatures. This spell costs {2} less to cast for each creature sacrificed this way."
Plumb the Forbidden 91%
$0.34#1148
"As an additional cost to cast this spell, you may sacrifice one or more creatures. When you do, copy this spell for each creature sacrificed this way."
The Hunger Tide Rises 86%
$0.26#8730
"Sacrifice any number of creatures. Search your library and/or graveyard for a creature card with mana value less than or equal to the number of creatures sacrificed this way and put it onto the battlefield. If you search your library this way, shuffle."
Last-Ditch Effort 84%
$2.04#11912
"Sacrifice any number of creatures. this card deals that much damage to any target."
Phyrexian Tribute 82%
$2.41#21615
"As an additional cost to cast this spell, sacrifice two creatures."