Touch of Darkness 
Instant
$10.28 #18081 0.00 32.4 years
One or more target creatures become black until end of turn.
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Dwarven Song94%
$3.68↓#29875↓0.20↑32.4 years
"One or more target creatures become red until end of turn."
Sea Kings' Blessing94%
$5.68↓#25549↓0.14↑32.4 years
"One or more target creatures become blue until end of turn."
Heaven's Gate93%
$14.33↑#191150.0632.4 years
"One or more target creatures become white until end of turn."
Sylvan Paradise92%
$13.76↑#27441↓0.20↑32.4 years
"One or more target creatures become green until end of turn."
Sway of Illusion88%
$0.52↓#188800.0026.0 years↓
"Any number of target creatures become the color of your choice until end of turn."
Quickchange84%
$0.16↓#22875↓0.38↑21.0 years↓
"Target creature becomes the color or colors of your choice until end of turn."
Singe82%
$0.14↓#30734↓0.0025.7 years↓
"this card deals 1 damage to target creature. That creature becomes black until end of turn."
Tidal Visionary82%
$0.20↓#203910.19↑26.0 years↓
"
: Target creature becomes the color of your choice until end of turn."
: Target creature becomes the color of your choice until end of turn."
Sinister Strength82%
$0.16↓#27038↓0.0625.7 years↓
"Enchanted creature gets +3/+1 and is black."
Aphotic Wisps80%
$0.26↓#8594↑0.0018.5 years↓
"Target creature becomes black and gains fear until end of turn."
Crimson Wisps79%
$0.92↓#2463↑0.0618.5 years↓
"Target creature becomes red and gains haste until end of turn."
Viridescent Wisps78%
$0.27↓#13370↑0.15↑18.5 years↓
"Target creature becomes green and gets +1/+0 until end of turn."
Serpentine Ambush78%
$0.12↓#187360.004.9 years↓
"Until end of turn, target creature becomes a blue Serpent with base power and toughness 5/5."
Incite78%
$0.06↓#27766↓0.0016.3 years↓
"Target creature becomes red until end of turn and attacks this turn if able."
Ersatz Gnomes78%
$0.20↓#28079↓0.11↑30.0 years↓
": Target spell becomes colorless."
: Target spell becomes colorless."
Niveous Wisps77%
$0.34↓#12872↑0.0518.5 years↓
"Target creature becomes white until end of turn. Tap that creature."
Moonlace76%
$0.35↓#178770.32↑20.0 years↓
"Target spell or permanent becomes colorless."
Prismwake Merrow76%
$0.09↓#30550↓0.11↑18.5 years↓
"When this creature enters, target permanent becomes the color or colors of your choice until end of turn."
Deathlace76%
$0.39↓#30304↓0.0633.2 years
"Target spell or permanent becomes black."
Thran Lens76%
$0.69↓#27116↓0.47↑27.7 years↓
"All permanents are colorless."