Pendrell Flux 

Enchantment — Aura
$0.12 #27248 0.47 28.0 years
Enchant creature
Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you pay its mana cost."
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Cards similar to Pendrell Flux expected a card that isn't here?
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Pendrell Mists87%
$12.80↑#17410↑1.61↑29.4 years↑
"All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay
.""
Instill Furor86%
$0.09↓#300990.33↓21.0 years↓
"Enchanted creature has "At the beginning of your end step, sacrifice this creature unless it attacked this turn.""
+1 more matching line
Magus of the Tabernacle85%
$2.14↑#17460↑1.52↑19.7 years↓
"All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay
.""
Aura Flux83%
$0.24↑#247411.12↑27.7 years
"Other enchantments have "At the beginning of your upkeep, sacrifice this enchantment unless you pay
.""
Disruption Aura82%
$0.15↑#305190.25↓22.4 years↓
"Enchanted artifact has "At the beginning of your upkeep, sacrifice this artifact unless you pay its mana cost.""
Inevitable End82%
$0.20↑#19693↑0.556.7 years↓
"Enchanted creature has "At the beginning of your upkeep, sacrifice a creature.""
Slow Motion81%
$0.19↑#240000.22↓27.7 years
"At the beginning of the upkeep of enchanted creature's controller, that player sacrifices that creature unless they pay
."
Vile Consumption81%
$10.46↑#13643↑1.14↑26.0 years↓
"All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay 1 life.""
Mana Chains80%
$0.28↑#235630.5229.4 years↑
"Enchanted creature has "Cumulative upkeep
.""
+1 more matching line
Withercrown77%
$0.17↑#19145↑0.29↓5.7 years↓
"Enchanted creature has base power 0 and has "At the beginning of your upkeep, you lose 1 life unless you sacrifice this creature.""
Soul Tithe76%
$0.18↑#18653↑0.64↑14.0 years↓
"At the beginning of the upkeep of enchanted permanent's controller, that player sacrifices it unless they pay
, where X is its mana value."
Lingering Death76%
$0.18↑#252190.06↓23.4 years↓
"At the beginning of the end step of enchanted creature's controller, that player sacrifices that creature."
Morgul-Knife Wound74%
$0.20↑#14413↑0.18↓3.3 years↓
"Enchanted creature gets -3/-0 and has "At the beginning of your upkeep, exile this creature unless you pay 2 life.""
+1 more matching line
Essence Leak74%
$0.27↑#268890.4026.0 years↓
"As long as enchanted permanent is red or green, it has "At the beginning of your upkeep, sacrifice this permanent unless you pay its mana cost.""
Coral Net73%
$0.23↑#295830.36↓24.7 years↓
"Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card.""
Energy Flux73%
$0.27↑#15121↑1.53↑32.6 years↑
"All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay
.""