Tideforce Elemental + Oboro Breezecaller + Walking Atlas + High Tide

Prerequisites

• Tideforce Elemental and Walking Atlas do not have summoning sickness.
• You control at least two Islands that enters the battlefield untapped.

Steps

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

Effects

• Infinite blue mana
• Infinite landfall triggers