Demon's Horn 
Artifact
$0.23 #6483 0.00 22.6 years
Whenever a player casts a black spell, you may gain 1 life.
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Sol'kanar the Swamp King100%
$0.16↓#19706↓0.12↑32.3 years↑
"Whenever a player casts a black spell, you gain 1 life."
Throne of Bone97%
$0.17↓#24397↓0.75↑33.1 years↑
"Whenever a player casts a black spell, you may pay 
. If you do, you gain 1 life."
. If you do, you gain 1 life."
Bog Gnarr90%
$0.08↓#31756↓0.0025.3 years↑
"Whenever a player casts a black spell, this creature gets +2/+2 until end of turn."
Smolder Initiate86%
$0.16↓#28029↓0.33↑18.3 years↓
"Whenever a player casts a black spell, you may pay . If you do, target player loses 1 life."
. If you do, target player loses 1 life."
Purraj of Urborg83%
$0.88↑#28511↓0.25↑29.9 years↑
"Whenever a player casts a black spell, you may pay 
. If you do, put a +1/+1 counter on Purraj."
. If you do, put a +1/+1 counter on Purraj."
Snake Pit80%
$0.32↑#13956↓0.0626.9 years↑
"Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token."
Freyalise's Charm80%
$0.19↓#29607↓0.0031.3 years↑
"Whenever an opponent casts a black spell, you may pay 
. If you do, you draw a card."
. If you do, you draw a card."
Dragon's Claw79%
$0.20↓#13985↓0.0022.6 years
"Whenever a player casts a red spell, you may gain 1 life."
Kor Firewalker78%
$0.18↓#24914↓0.29↑16.6 years↓
"Whenever a player casts a red spell, you may gain 1 life."
Kraken's Eye78%
$0.10↓#15609↓0.25↑22.6 years
"Whenever a player casts a blue spell, you may gain 1 life."
Iron Star78%
$0.15↓#27268↓0.33↑33.1 years↑
"Whenever a player casts a red spell, you may pay . If you do, you gain 1 life."
. If you do, you gain 1 life."
Onyx Talisman78%
$0.34↑#25539↓0.0731.3 years↑
"Whenever a player casts a black spell, you may pay 
. If you do, untap target permanent."
. If you do, untap target permanent."
Urza's Chalice78%
$1.19↑#23983↓0.24↑32.5 years↑
"Whenever a player casts an artifact spell, you may pay . If you do, you gain 1 life."
. If you do, you gain 1 life."
Warmth77%
$1.06↑#28262↓0.0728.9 years↑
"Whenever an opponent casts a red spell, you gain 2 life."
Crystal Rod77%
$0.12↓#26717↓0.0033.1 years↑
"Whenever a player casts a blue spell, you may pay . If you do, you gain 1 life."
. If you do, you gain 1 life."
Angel's Feather77%
$0.19↓#10131↓0.0022.6 years
"Whenever a player casts a white spell, you may gain 1 life."
Wurm's Tooth76%
$0.13↓#14247↓0.36↑22.6 years
"Whenever a player casts a green spell, you may gain 1 life."
Radiant Essence76%
$0.21↓#31973↓0.28↑29.9 years↑
"This creature gets +1/+2 as long as an opponent controls a black permanent."
Mold Adder76%
$0.11↓#14542↓0.0017.1 years↓
"Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on this creature."
Witchstalker76%
$0.25↑#19122↓0.27↑13.1 years↓
"Whenever an opponent casts a blue or black spell during your turn, put a +1/+1 counter on this creature."