Livio, Oathsworn Sentinel, Great Whale, and Great Oak Guardian

Prerequisites

• All permanents on the battlefield
• Livio does not have summoning sickness
• You control up to seven lands that can tap to produce at least

Steps

1. Activate up to seven mana-producing lands by tapping them, adding at least
2. Activate Livio's first ability twice by paying , exiling Great Whale and Great Oak Guardian with aegis counters on them
3. Activate Livio's second ability by paying and tapping it, returning Great Whale and Great Oak Guardian from exile to the battlefield
4. Great Oak Guardian 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 Great Oak Guardian trigger, untapping each creature you control and giving them +2/+2 until end of turn
7. Repeat

Results

• Infinite mana lands you control can produce
• Infinitely large creatures until end of turn
• Infinite ETB
• Infinite LTB
• Infinite blinking
• Infinite untap of creatures you control