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From $1.50
'Discard a card: You may cast a creature spell from your graveyard this turn. Activate only once each turn. Whenever a nontoken creature you control enters, if you didn't cast...
From $0.75
'This land enters tapped.
As this land enters, choose a color other than green.
{T}: Add {G} or one mana of the chosen color.
From $17.00
'This land enters tapped unless you have two or more opponents.
{T}: Add {U} or {R}.
$0.25
'Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.
From $18.00
'This land enters tapped unless you have two or more opponents.
{T}: Add {U} or {R}.
From $2.50
'Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.
From $15.50
'This land enters tapped unless you have two or more opponents.
{T}: Add {W} or {B}.
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 $3.25
'You don't lose unspent green mana as steps and phases end.
Omnath gets +1/+1 for each unspent green mana you have.
From $7.25
'Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add {C}.
From $13.00
'This land enters tapped unless you have two or more opponents.
{T}: Add {U} or {R}.