Runeflare Trap 
Instant — Trap
$0.19 #15644 0.00 16.9 years
If an opponent drew three or more cards this turn, you may pay rather than pay this spell's mana cost.
rather than pay this spell's mana cost.Runeflare Trap deals damage to target player equal to the number of cards in that player's hand.
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Cards similar to Runeflare Trap 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.
Gaze of Adamaro98%
$0.23↑#20252↓0.21↑21.3 years↑
"this card deals damage to target player equal to the number of cards in that player's hand."
Sudden Impact93%
$0.16↓#18982↓0.35↑28.9 years↑
"this card deals damage to target player equal to the number of cards in that player's hand."
Storm Seeker88%
$0.36↑#20295↓0.39↑32.3 years↑
"this card deals damage to target player equal to the number of cards in that player's hand."
Toil // Trouble83%
$0.10↓#19519↓0.0713.3 years↓
"Trouble deals damage to target player equal to the number of cards in that player's hand."
Viseling82%
$0.35↑#10596↑0.53↑26.6 years↑
"At the beginning of each opponent's upkeep, this creature deals X damage to that player, where X is the number of cards in their hand minus 4."
Iron Maiden82%
$12.34↑#8331↑0.20↑27.6 years↑
"At the beginning of each opponent's upkeep, this artifact deals X damage to that player, where X is the number of cards in their hand minus 4."
Black Vise80%
$0.43↑#10830↑0.42↑33.1 years↑
"At the beginning of the chosen player's upkeep, this artifact deals X damage to that player, where X is the number of cards in their hand minus 4."
Vicious Shadows78%
$1.95↑#11571↑0.59↑17.9 years
"Whenever a creature dies, you may have this enchantment deal damage to target player equal to the number of cards in that player's hand."
Price of Knowledge78%
$2.28↑#12001↑0.33↑12.8 years↓
"At the beginning of each opponent's upkeep, this enchantment deals damage to that player equal to the number of cards in that player's hand."
Tibalt, the Fiend-Blooded77%
$0.61↑#178470.65↑14.3 years↓
"−4: this card deals damage equal to the number of cards in target player's hand to that player."
Ebony Owl Netsuke77%
$2.25↑#129190.29↑21.3 years↑
"At the beginning of each opponent's upkeep, if that player has seven or more cards in hand, this artifact deals 4 damage to that player."
Balor76%
$5.12↑#4342↑0.45↑4.2 years↓
"• This creature deals damage to target opponent equal to the number of cards in their hand."
Notion Thief76%
$1.63↑#1191↑1.96↑13.3 years↓
"If an opponent would draw a card except the first one they draw in each of their draw steps, instead that player skips that draw and you draw a card."
Misers' Cage75%
$1.46↑#19655↓0.32↑29.9 years↑
"At the beginning of each opponent's upkeep, if that player has five or more cards in hand, this artifact deals 2 damage to that player."
Spiraling Embers74%
$0.31↑#20569↓0.24↑21.3 years↑
"this card deals damage to any target equal to the number of cards in your hand."
Balance of Power74%
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"If target opponent has more cards in hand than you, draw cards equal to the difference."
Search Warrant74%
$0.16↓#18821↓0.21↑13.9 years↓
"Target player reveals their hand. You gain life equal to the number of cards in that player's hand."
Even the Score73%
$0.49↑#9474↑0.33↑4.4 years↓
"This spell costs 
less to cast if an opponent has drawn four or more cards this turn."
less to cast if an opponent has drawn four or more cards this turn."
Bulwark72%
$0.43↑#26073↓0.57↑27.9 years↑
"At the beginning of your upkeep, this enchantment deals X damage to target opponent, where X is the number of cards in your hand minus the number of cards in that player's hand."
Ignite Memories72%
$0.39↑#126530.60↑19.9 years↑
"Target player reveals a card at random from their hand. this card deals damage to that player equal to that card's mana value."