Sol'kanar the Swamp King 
Legendary Creature — Demon
$0.17 #20022 0.12 32.4 years
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
Whenever a player casts a black spell, you gain 1 life.
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Demon's Horn100%
$0.21↑#6565↑0.1222.7 years↓
"Whenever a player casts a black spell, you may gain 1 life."
Throne of Bone97%
$0.16↓#24594↓0.0633.2 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%
$0.13↓#32081↓0.00↓25.4 years↓
"Whenever a player casts a black spell, this creature gets +2/+2 until end of turn."
Smolder Initiate85%
$0.18↑#28259↓0.2018.5 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."
Krosan Constrictor84%
$0.14↓#30388↓0.00↓24.7 years↓
"Swampwalk"
Purraj of Urborg83%
$0.97↑#28958↓0.00↓30.0 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."
Kor Firewalker78%
$0.20↑#25224↓0.29↑16.7 years↓
"Whenever a player casts a red spell, you may gain 1 life."
Dragon's Claw78%
$0.20↑#14081↑0.00↓22.7 years↓
"Whenever a player casts a red spell, you may gain 1 life."
Kraken's Eye78%
$0.10↓#15676↑0.0522.7 years↓
"Whenever a player casts a blue spell, you may gain 1 life."
Onyx Talisman78%
$0.36↑#25732↓0.29↑31.4 years↓
"Whenever a player casts a black spell, you may pay 
. If you do, untap target permanent."
. If you do, untap target permanent."
Snake Pit78%
$0.28↑#14073↑0.1227.0 years↓
"Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token."
Iron Star77%
$0.15↓#27454↓0.24↑33.2 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."
Freyalise's Charm76%
$0.16↓#29946↓0.35↑31.4 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."
Crystal Rod76%
$0.14↓#26801↓0.00↓33.2 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."
Wurm's Tooth76%
$0.14↓#14141↑0.00↓22.7 years↓
"Whenever a player casts a green spell, you may gain 1 life."
Angel's Feather76%
$0.21↑#10015↑0.0622.7 years↓
"Whenever a player casts a white spell, you may gain 1 life."
Radiant Essence76%
$0.23↑#32256↓0.00↓30.0 years↓
"This creature gets +1/+2 as long as an opponent controls a black permanent."
Urza's Chalice76%
$1.11↑#24159↓0.0632.6 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."
Raven's Run Dragoon76%
$0.10↓#31828↓0.00↓18.5 years↓
"This creature can't be blocked by black creatures."
Mold Adder75%
$0.12↓#14685↑0.2017.3 years↓
"Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on this creature."