Alternatives to Nature's Wrath

Nature's Wrath {4}

Enchantment

At the beginning of your upkeep, sacrifice this enchantment unless you pay {G} .
Whenever a player puts an Island or blue permanent onto the battlefield, that player sacrifices an Island or blue permanent of their choice.
Whenever a player puts a Swamp or black permanent onto the battlefield, that player sacrifices a Swamp or black permanent of their choice.

Here are 6 cards you can replace Nature's Wrath with in your deck.