You control up to seven lands that can tap to produce at least ({5} magic symbol) ({W} magic symbol) ({W} magic symbol) ({W} magic symbol) .
Steps
Activate up to seven mana-producing lands by tapping them, adding at least ({5} magic symbol) ({W} magic symbol) ({W} magic symbol) ({W} magic symbol) .
Activate
Livio's first ability twice by paying ({2} magic symbol) ({W} magic symbol) ({W} magic symbol) , exiling
Great Whale and
Great Oak Guardian with aegis counters on them.
Activate
Livio's second ability by paying ({2} magic symbol) ({W} magic symbol) and tapping it, returning
Great Whale and
Great Oak Guardian from exile to the battlefield.
Great Oak Guardian and
Great Whale enter the battlefield, triggering their abilities.
Resolve the
Great Whale trigger, untapping up to seven lands you control.
Resolve the
Great Oak Guardian trigger, untapping each creature you control and giving them +2/+2 until end of turn.
Repeat.
Results
Infinite blinking.
Infinite ETB.
Infinite LTB.
Infinitely large creatures until end of turn.
Infinite mana creatures you control can produce.
Infinite mana lands you control can produce.
Infinite untap of creatures you control.
Infinite power and toughness for creatures you control until end of turn.