Wu Admiral 

Creature — Human Soldier
$2.33 #31098 0.21 27.3 years
This creature gets +1/+1 as long as an opponent controls an Island.
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Water Wurm100%
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"this card deals damage to each opponent equal to the number of Islands that player controls."
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"If an opponent controls an Island and you control a Mountain, you may cast this spell without paying its mana cost."
Thoughtleech79%
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"Whenever an Island an opponent controls becomes tapped, you may gain 1 life."
Carpet of Flowers78%
$1.76↓#1262↑0.60↑27.9 years
"At the beginning of each of your main phases, if you haven't added mana with this ability this turn, you may add X mana of any one color, where X is the number of Islands target opponent controls."
Monsoon76%
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"At the beginning of each player's end step, tap all untapped Islands that player controls and this enchantment deals X damage to the player, where X is the number of Islands tapped this way."
Scald75%
$0.29↓#253970.2027.9 years
"Whenever a player taps an Island for mana, this enchantment deals 1 damage to that player."
Curse of Marit Lage72%
$2.64↑#256051.06↑31.3 years↑
"Islands don't untap during their controllers' untap steps."
Cryoclasm70%
$0.10↓#277350.49↑20.1 years↓
"Destroy target Plains or Island. this card deals 3 damage to that land's controller."