Phyrexian Boon 
Enchantment — Aura
$0.08 #30177 0.05 30.2 years
Enchant creature
Enchanted creature gets +2/+1 as long as it's black. Otherwise, it gets -1/-2.
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Serra's Boon86%
$0.22↑#293900.25↑19.6 years↓
"Enchanted creature gets +1/+2 as long as it's white. Otherwise, it gets -2/-1."
+1 more matching line
Mire's Grasp86%
$0.14↑#20954↑0.006.6 years↓
"Enchanted creature gets -3/-3."
+1 more matching line
Weight of the Underworld86%
$0.03↓#276250.40↑12.6 years↓
"Enchanted creature gets -3/-2."
Debilitating Injury86%
$0.04↓#266460.27↑11.9 years↓
"Enchanted creature gets -2/-2."
+1 more matching line
Dead Weight86%
$0.05↓#14308↑0.43↑14.9 years↓
"Enchanted creature gets -2/-2."
+1 more matching line
Clinging Darkness86%
$0.14↑#280780.1320.9 years↓
"Enchanted creature gets -4/-1."
Feebleness86%
$0.10↑#282200.63↑19.9 years↓
"Enchanted creature gets -2/-1."
+1 more matching line
Weakness86%
$0.05↓#276650.0033.1 years↑
"Enchanted creature gets -2/-1."
+1 more matching line
Endless Scream84%
$0.10↑#20493↑0.0028.9 years↓
"Enchant creature"
Nyx Infusion84%
$0.05↓#294180.0012.3 years↓
"Enchanted creature gets +2/+2 as long as it's an enchantment. Otherwise, it gets -2/-2."
+1 more matching line
Armament of Nyx83%
$0.04↓#22370↑0.31↑12.3 years↓
"Enchant creature"
Sangrite Backlash81%
$0.07↓#307400.22↑17.3 years↓
"Enchanted creature gets +3/-3."
Boon of Emrakul81%
$0.06↓#250400.0010.1 years↓
"Enchanted creature gets +3/-3."
Twisted Experiment81%
$0.11↑#254690.0027.2 years↓
"Enchanted creature gets +3/-1."
Immolation81%
$0.09↑#20821↑0.1232.3 years↑
"Enchanted creature gets +2/-2."
Riot Spikes81%
$0.05↓#292580.63↑20.3 years↓
"Enchanted creature gets +2/-1."
+1 more matching line
Tahngarth's Rage81%
$0.19↑#265670.0028.9 years↓
"Enchanted creature gets +3/+0 as long as it's attacking. Otherwise, it gets -2/-1."
+1 more matching line
Gift of Fangs80%
$0.21↑#14629↑0.60↑4.8 years↓
"Enchanted creature gets +2/+2 as long as it's a Vampire. Otherwise, it gets -2/-2."
+1 more matching line
Edge of the Divinity80%
$0.37↑#13703↑0.0818.1 years↓
"As long as enchanted creature is black, it gets +2/+1."
+1 more matching line
Enfeeblement80%
$0.08#289980.20↑29.9 years
"Enchanted creature gets -2/-2."
+1 more matching line