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$24.75 – $36.25
'At the beginning of your upkeep, flip a coin. If you lose the flip, this artifact deals 3 damage to you.
{T}: Add {C}{C}.
$74.50 – $75.00
'Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
$88.50 – $98.50
'This artifact doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap this artifact. At the beginning of your draw...
$40.50 – $56.00
'Whenever a creature enters, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it.
$41.25 – $49.00
'Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
$31.75 – $56.75
'Whenever a creature enters, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it.
$35.75 – $38.50
'At the beginning of your upkeep, flip a coin. If you lose the flip, this artifact deals 3 damage to you.
{T}: Add {C}{C}.
$48.75 – $54.25
'Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
$10.00 – $16.50
'Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce.
$2.00 – $3.50
This land enters tapped unless you control two or more other lands. When this land enters untapped, choose one — • This land deals 1 damage to each opponent. •...
$1.25 – $2.00
'Counter target spell. If you control a Wizard, add an amount of {C} equal to the amount of mana spent to cast that spell at the beginning of your next...