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$1.25 – $3.50
'Whenever a player taps a land for mana, that player adds one mana of any type that land produced.
$1.50 – $3.25
'Tap all lands target player controls and that player loses all unspent mana.
$2.00 – $2.50
'If you tap a permanent for mana, it produces twice as much of that mana instead.
$20.00 – $25.25
'Indestructible
Equipped creature gets +3/+3 and has vigilance and "{T}, Sacrifice this creature: Add three mana of any one color."
Equip {3}
$2.50 – $5.00
'Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.
$2.00 – $5.00
'Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.
$1.00 – $2.00
'Sliver creatures you control have "{T}: Add one mana of any color."
$13.75 – $19.50
'Look at the top five cards of your library. As many times as you choose, you may pay 1 life, put those cards on the bottom of your library in...