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From $3.75
'Target creature gets -1/-1 until end of turn for each Swamp you control.
From $32.25
'Flash
Double strike, vigilance, haste
Other creatures you control have haste.
{W}, {T}: Untap another target creature.
From $12.25
As an additional cost to cast this spell, sacrifice a creature.
Search your library for a card, put that card into your hand, then shuffle.
From $60.50
'{R}: All creatures gain trample and haste until end of turn. {1}{G}: Put a +1/+1 counter on target creature. {2}{W}: Target player gains 5 life. {3}{U}: Target player draws a...
From $9.00
'You may sacrifice a nontoken blue creature rather than pay this spell's mana cost.
Counter target spell.
From $8.75
'Target creature you control deals damage equal to its power to each other creature and each opponent.
From $15.00
'During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments.
From $11.75
'You may look at the top card of your library any time. As long as The Reality Chip is attached to a creature, you may play lands and cast spells...
From $15.50
'Your opponents can't cast spells with even mana values. (Zero is even.)
Your opponents can't block with creatures with even mana values.
From $6.75
'When this creature enters, gain control of target permanent.
At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.
From $12.25
'Whenever an opponent casts a spell, that player draws seven cards.