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From $7.75
'Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.
From $49.00
'{T}: Add {C}. {2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the...
From $0.75
'Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)...
From $38.00
'If this land would enter, sacrifice two untapped lands instead. If you do, put this land onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add...
From $42.75
'When this artifact enters, each opponent sacrifices three creatures of their choice. At the beginning of your upkeep, put target creature card from a graveyard onto the battlefield under your...
From $1.00
'Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.
$2.00
'This land enters tapped. {T}: Add {C}. {2}{C}, {T}, Sacrifice this land: Copy target instant or sorcery spell you control. You may choose new targets for the copy. {4}{C}, {T},...
From $50.75
'You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.
Counter target spell.
From $6.75
'You don't lose unspent green mana as steps and phases end.
Omnath gets +1/+1 for each unspent green mana you have.
From $50.50
'{T}: Add {C}. {2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the...
From $50.00
'If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.