This deck will either work especially well or fall in a heap. It has huge mana excelleration from all the nature cards. Water gives search, draw and bounce. Divine Riptide is the main win, followed by quick mana recovery from Bliss Totem, allowing me to quickly recast the darkness control cards.

4 Essence Elf
4 Bronze Arm Tribe
4 Bliss Totem, Avatar of Luck
4 Mystic Treasure Chest
4 Faerie life

4 Divine Riptide
4 Energy Stream
4 Thought Probe
4 Shock Hurricane

4 Proclamation of Death
4 Death Smoke
4 Terror Pit

Perhaps try Thrash Crawler to draw cards from your mana zone to use/re-use them prior to Riptide drops. Since it's a blocker the loss in tempo could be offset via some protection so you still get to Riptide in a reasonable amount of time. But, it does hinder fast casting, lol.