Coral Net 
Enchantment — Aura
$0.23 #29583 0.36 24.7 years
Enchant green or white creature
Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card."
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Cards similar to Coral Net expected a card that isn't here?
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Inevitable End81%
$0.20↓#19693↑0.55↑6.7 years↓
"Enchanted creature has "At the beginning of your upkeep, sacrifice a creature.""
Deathmark80%
$0.11↓#19587↑0.25↓20.2 years↓
"Destroy target green or white creature."
Mind Harness78%
$0.32↑#20442↑0.73↑30.0 years↑
"Enchant red or green creature"
Green Scarab76%
$0.27↑#260420.12↓31.4 years↑
"Enchanted creature can't be blocked by green creatures."
White Scarab76%
$0.24↑#251100.05↓31.4 years↑
"Enchanted creature can't be blocked by white creatures."
Controlled Instincts76%
$0.08↓#307210.3817.7 years↓
"Enchant red or green creature"
Self-Inflicted Wound76%
$0.08↓#305980.10↓11.6 years↓
"Target opponent sacrifices a green or white creature of their choice. If that player does, they lose 2 life."
Encase in Ice75%
$0.05↓#280510.4511.6 years↓
"Enchant red or green creature"
Decomposition74%
$0.10↓#307660.00↓30.0 years↑
"Enchanted creature has "Cumulative upkeep—Pay 1 life.""
Wurmweaver Coil74%
$0.18↓#20877↑0.13↓20.7 years↓
"Enchant green creature"
Noxious Grasp74%
$0.15↓#264030.10↓7.3 years↓
"Destroy target creature or planeswalker that's green or white. You gain 1 life."
Pendrell Flux73%
$0.12↓#272480.47↑28.0 years↑
"Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you pay its mana cost.""
Withercrown73%
$0.17↓#19145↑0.295.7 years↓
"Enchanted creature has base power 0 and has "At the beginning of your upkeep, you lose 1 life unless you sacrifice this creature.""
+1 more matching line
Gloomlance73%
$0.11↓#311400.06↓18.5 years↓
"Destroy target creature. If that creature was green or white, its controller discards a card."
Flash of Defiance72%
$0.25↑#296430.48↑24.7 years
"Green creatures and white creatures can't block this turn."
Instill Furor72%
$0.09↓#300990.3321.0 years↓
"Enchanted creature has "At the beginning of your end step, sacrifice this creature unless it attacked this turn.""
Nature's Ruin70%
$0.77↑#259880.71↑29.5 years↑
"Destroy all green creatures."
Glistening Deluge70%
$0.13↓#21617↑0.22↓3.5 years↓
"All creatures get -1/-1 until end of turn. Creatures that are green and/or white get an additional -2/-2 until end of turn."
Virtue's Ruin70%
$0.17↓#258610.59↑29.5 years↑
"Destroy all white creatures."