Livio, Oathsworn Sentinel + Great Whale + Bounding Krasis

Livio, Oathsworn Sentinel

Great Whale

Bounding Krasis

How it works

1. Activate up to seven mana-producing lands by tapping them, adding at least 5.
2. Activate Livio's first ability twice by paying 2, exiling Great Whale and Bounding Krasis with aegis counters on them.
3. Activate Livio's second ability by paying 2 and tapping it, returning Great Whale and Bounding Krasis from exile to the battlefield.
4. Bounding Krasis and Great Whale enter the battlefield, triggering their abilities.
5. Resolve the Great Whale trigger, untapping up to seven lands you control.
6. Resolve the Bounding Krasis trigger, untapping Livio.
7. Repeat.