Activate up to seven mana-producing lands by tapping them, adding at least {5}{W}{W}{W}.
Activate Livio's first ability twice by paying {2}{W}{W}, exiling Great Whale and Hyrax Tower Scout with aegis counters on them.
Activate Livio's second ability by paying {2}{W} and tapping it, returning Great Whale and Hyrax Tower Scout from exile to the battlefield.
Hyrax Tower Scout and Great Whale enter the battlefield, triggering their abilities.
Resolve the Great Whale trigger, untapping up to seven lands you control.
Resolve the Hyrax Tower Scout trigger, untapping Livio.
Repeat.

Infinite blinking

Infinite ETB

Infinite LTB

Infinite mana lands you control can produce

Livio, Oathsworn Sentinel

Great Whale

Hyrax Tower Scout

Activate up to seven mana-producing lands by tapping them, adding at least {5}{W}{W}{W}.
Activate Livio's first ability twice by paying {2}{W}{W}, exiling Palinchron and Hyrax Tower Scout with aegis counters on them.
Activate Livio's second ability by paying {2}{W} and tapping it, returning Palinchron and Hyrax Tower Scout from exile to the battlefield.
Hyrax Tower Scout and Palinchron enter the battlefield, triggering their abilities.
Resolve the Palinchron trigger, untapping up to seven lands you control.
Resolve the Hyrax Tower Scout trigger, untapping Livio.
Repeat.

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