Mana Echoes [Onslaught] Friday Night Magic 2012 Set: Legends Type: World Enchantment

Set: Legends Type: World Enchantment Rarity: Uncommon Cost: {2}{G}{G} Creatures can't attack a player unless that player cast a spell or put a nontoken permanent onto the battlefield during their last turn

Other Treefolk and Forests you control have indestructible

As the green sun crowned

" —Ella Wheeler Wilcox

then discards two cards

Mana Echoes [Onslaught] Friday Night Magic 2012 Set: Legends Type: World EnchantmentSet: Onslaught Type: Enchantment Rarity: Rare Cost: {2}{R}{R} Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it. When the ground is saturated with mana, even the lightest footstep can bring it to the surface.