Extended Heartbeat deck

Heartbeat (named after Heartbeat of Spring) is a blue-green Combo deck. The goal of the deck is to play Heartbeat of Spring followed by Early Harvest to generate enough mana for a succession of draw-spells and Early Harvests (regrown with Nostalgic Dreams). With this enough spells should be played to be able to generate a lethal Brain Freeze

 10 Island 12 Forest

4 Sakura-Tribe Elder 2 Rampant Growth 2 Moment's Peace 4 Heartbeat of Spring 3 Early Harvest 1 Echoing Truth

4 Cunning Wish 4 Mind's Desire 4 Gifts Ungiven 4 Nostalgic Dreams 3 Fact or Fiction 1 Revive 1 Deep Analysis 1 Brain Freeze

Sideboard: 1 Early Harvest 1 Fact or Fiction 1 Moment's Peace 1 Words of Wisdom 1 Chain of Vapor 1 Memory Lapse 1 Stifle 2 Brain Freeze 2 Naturalize 2 Mana Short 2 Boseiju, Who Shelters All 