Requires

Tideforce Elemental must be on the battlefield. Oboro Breezecaller must be on the battlefield. Walking Atlas must be on the battlefield. High Tide must be in hand. Tideforce Elemental and Walking Atlas do not have summoning sickness. You control at least two Islands that enters the battlefield untapped. Mana needed:

Steps

1. Cast High Tide by paying .
2. Activate two Islands by tapping them, adding .
3. Activate Oboro Breezecaller by paying and returning a tapped Island to your hand, untapping another Island.
4. Activate Walking Atlas by tapping it, putting an Island from your hand onto the battlefield.
5. Whenever the Island enters the battlefield, Tideforce Elemental triggers.
6. Holding priority, activate Tideforce Elemental by paying and tapping it, untap Walking Atlas.
7. Resolve the Tideforce Elemental trigger, untapping itself.
8. Repeat from step 2.

Results