Mask of Intolerance 
Artifact
$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.
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Cards similar to Mask of Intolerance expected a card that isn't here?
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Copper Tablet93%
$56.19↑#15887↑0.2533.2 years↑
"At the beginning of each player's upkeep, this artifact deals 1 damage to that player."
Power Surge93%
$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."
Barbed Wire90%
$1.36↑#13927↑0.17↓27.0 years↑
"At the beginning of each player's upkeep, this artifact deals 1 damage to that player."
Rumbling Slum90%
$0.25↓#270680.06↓20.7 years↓
"At the beginning of your upkeep, this creature deals 1 damage to each player."
Primal Order89%
$1.90↑#15993↑0.68↑31.1 years↑
"At the beginning of each player's upkeep, this enchantment deals damage to that player equal to the number of nonbasic lands they control."
Citadel of Pain89%
$3.67↑#6850↑0.61↑26.4 years
"At the beginning of each player's end step, this enchantment deals X damage to that player, where X is the number of untapped lands they control."
Furnace Punisher88%
$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."
Collapsing Borders88%
$0.36↑#24222↑0.3826.0 years
"At the beginning of each player's upkeep, that player gains 1 life for each basic land type among lands they control. Then this enchantment deals 3 damage to that player."
Rivalry86%
$0.36↑#259290.2727.7 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."
Price of Progress86%
$4.47↑#2857↑0.4128.3 years↑
"this card deals damage to each player equal to twice the number of nonbasic lands that player controls."
Flame Rift86%
$0.33↑#4030↑0.2826.7 years↑
"this card deals 4 damage to each player."
Antagonism86%
$0.41↑#258600.18↓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."
Impatience85%
$0.29↓#23159↑0.2527.4 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."
Roiling Vortex84%
$1.36↑#2588↑0.54↑6.1 years↓
"At the beginning of each player's upkeep, this enchantment deals 1 damage to them."
Razor Pendulum84%
$0.55↑#304710.05↓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."
Acidic Soil83%
$0.59↑#8133↑0.3328.0 years↑
"this card deals damage to each player equal to the number of lands they control."
Spear Spewer82%
$0.18↓#5207↑0.19↓7.7 years↓
"
: This creature deals 1 damage to each player."
: This creature deals 1 damage to each player."
Ancient Runes82%
$1.46↑#14866↑0.2429.0 years↑
"At the beginning of each player's upkeep, this enchantment deals damage to that player equal to the number of artifacts they control."
Cold Snap80%
$0.19↓#315710.21↓31.4 years↑
"At the beginning of each player's upkeep, this enchantment deals damage to that player equal to the number of snow lands they control."
Lim-Dûl's Hex80%
$0.49↑#17447↑0.12↓31.4 years↑
"At the beginning of your upkeep, for each player, this enchantment deals 1 damage to that player unless they pay 
or 
."
or ."