Parallax Tide Combos
Emeria Shepherd + Parallax Tide + Seal of Cleansing
Heidar, Rimewind Master + Parallax Tide + Retreat to Coralhelm
Combo result
Infinite mana basic lands you control can produce. Infinite storm count. Infinite landfall triggers. Infinite blinking of lands you control. Infinite scry 1. Infinite untap of creatures you control.
Prerequisites
High Tide and Parallax Tide in hand. All other permanents on the battlefield. You control at least four Islands. Heidar does not have summoning sickness. You control at least four snow permanents. {U} available.