Mana Drain 
Instant
$54.91 #117 1.89 32.3 years
Counter target spell. At the beginning of your next main phase, add an amount of 
equal to that spell's mana value.
equal to that spell's mana value.Click a line or tag to filter
Cards similar to Mana Drain expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Plasm Capture96%
$0.26↓#6630↓0.05↓13.3 years↓
"Counter target spell. At the beginning of your next first main phase, add X mana in any combination of colors, where X is that spell's mana value."
Scattering Stroke88%
$0.30↓#12789↓0.61↓18.9 years↓
"Counter target spell. Clash with an opponent. If you win, at the beginning of your next main phase, you may add an amount of equal to that spell's mana value."
equal to that spell's mana value."
Mystic Genesis83%
$0.17↓#18587↓0.00↓13.6 years↓
"Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value."
Spell Blast80%
$0.09↓#20029↓0.24↓33.1 years
"Counter target spell with mana value X."
Spell Swindle78%
$1.49↓#3178↓0.43↓8.9 years↓
"Counter target spell. Create X Treasure tokens, where X is that spell's mana value."
Sacrifice76%
$5.77↓#2876↓0.31↓33.1 years
"Add an amount of 
equal to the sacrificed creature's mana value."
equal to the sacrificed creature's mana value."
Disdainful Stroke74%
$0.13↓#2368↓0.24↓11.9 years↓
"Counter target spell with mana value 4 or greater."
Electrosiphon74%
$0.31↓#5699↓0.27↓2.5 years↓
"Counter target spell. You get an amount of 
equal to its mana value."
equal to its mana value."
Burnt Offering74%
$1.44↓#3125↓0.28↓31.3 years↓
"Add X mana in any combination of and/or 
, where X is the sacrificed creature's mana value."
and/or , where X is the sacrificed creature's mana value."
Mana Sculpt74%
$0.94↓#4057↓0.00↓0.4 years↓
"Counter target spell. If you control a Wizard, add an amount of equal to the amount of mana spent to cast that spell at the beginning of your next main phase."
equal to the amount of mana spent to cast that spell at the beginning of your next main phase."
Reinterpret72%
$0.43↓#9710↓0.87↓5.4 years↓
"Counter target spell. You may cast a spell with equal or lesser mana value from your hand without paying its mana cost."
Draining Whelk70%
$0.39↓#13168↓0.14↓19.9 years↓
"When this creature enters, counter target spell. Put X +1/+1 counters on this creature, where X is that spell's mana value."