Roiling Vortex 
Enchantment
$1.36 #2588 0.54 6.1 years
At the beginning of each player's upkeep, this enchantment deals 1 damage to them.
Whenever a player casts a spell, if no mana was spent to cast that spell, this enchantment deals 5 damage to that player.
: Your opponents can't gain life this turn.Click a line or tag to filter
Cards similar to Roiling Vortex 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.
Sulfuric Vortex92%
$0.86↓#28650.71↑23.4 years↑
"At the beginning of each player's upkeep, this enchantment deals 2 damage to that player."
Copper Tablet90%
$56.19↑#15887↓0.25↓33.2 years↑
"At the beginning of each player's upkeep, this artifact deals 1 damage to that player."
Rumbling Slum88%
$0.25↓#27068↓0.06↓20.7 years↑
"At the beginning of your upkeep, this creature deals 1 damage to each player."
Barbed Wire84%
$1.36#13927↓0.17↓27.0 years↑
"At the beginning of each player's upkeep, this artifact deals 1 damage to that player."
Mask of Intolerance84%
$0.30↓#30479↓0.31↓25.4 years↑
"At the beginning of each player's upkeep, if there are four or more basic land types among lands that player controls, this artifact deals 3 damage to that player."
Tokka & Rahzar, Terrible Twos82%
$0.27↓#19094↓0.29↓0.6 years↓
"Whenever a player casts a spell, if the amount of mana spent to cast it was less than its mana value, this card deal 3 damage to that player."
Power Surge82%
$1.09↓#11693↓0.17↓33.2 years↑
"At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn."
Giant Cindermaw82%
$0.11↓#10971↓0.40↓3.9 years↓
"Players can't gain life."
Impatience81%
$0.29↓#23159↓0.25↓27.4 years↑
"At the beginning of each player's end step, if that player didn't cast a spell this turn, this enchantment deals 2 damage to that player."
Spear Spewer81%
$0.18↓#5207↓0.19↓7.7 years↑
"
: This creature deals 1 damage to each player."
: This creature deals 1 damage to each player."
Flame Rift81%
$0.33↓#4030↓0.28↓26.7 years↑
"this card deals 4 damage to each player."
Sunspine Lynx81%
$1.84↑#29320.66↑2.2 years↓
"Players can't gain life."
+1 more matching line
Antagonism80%
$0.41↓#25860↓0.18↓28.0 years↑
"At the beginning of each player's end step, this enchantment deals 2 damage to that player unless one of their opponents was dealt damage this turn."
Spellshock80%
$2.89↑#5624↓0.80↑28.3 years↑
"Whenever a player casts a spell, this enchantment deals 2 damage to that player."
Razor Pendulum80%
$0.55↓#30471↓0.05↓30.0 years↑
"At the beginning of each player's end step, if that player has 5 or less life, this artifact deals 2 damage to that player."
Rampaging Ferocidon80%
$1.79↑#26500.649.1 years↑
"Players can't gain life."
+1 more matching line
Furnace Punisher79%
$0.08↓#21498↓0.10↓3.7 years↓
"At the beginning of each player's upkeep, this creature deals 2 damage to that player unless they control two or more basic lands."
Plague Spitter78%
$0.49↓#7593↓0.10↓26.0 years↑
"At the beginning of your upkeep, this creature deals 1 damage to each creature and each player."
Rivalry78%
$0.36↓#25929↓0.27↓27.7 years↑
"At the beginning of each player's upkeep, if that player controls more lands than each other player, this enchantment deals 2 damage to them."
Festering Evil78%
$0.24↓#23753↓0.24↓29.4 years↑
"At the beginning of your upkeep, this enchantment deals 1 damage to each creature and each player."