Auriok Bladewarden, Necrotic Ooze, Phyrexian Colossus, and Tree of Redemption

Prerequisites

• Auriok Bladewarden in your graveyard
• Necrotic Ooze on the battlefield
• Phyrexian Colossus in your graveyard
• Tree of Redemption in your graveyard
• Necrotic Ooze does not have summoning sickness
• Your life total is at least twenty-five

Steps

1. Activate Necrotic Ooze using Auriok Bladewarden's ability by tapping it, giving itself +X/+X until end of turn, where X is Necrotic Ooze's power
2. Activate Necrotic Ooze using Phyrexian Colossus' ability by paying eight life, untapping it
3. Repeat two additional times
4. Activate Necrotic Ooze using Tree of Redemption's ability by tapping it, causing you to swap your life total with Necrotic Ooze's toughness
5. Activate Necrotic Ooze using Phyrexian Colossus' ability by paying eight life, untapping it
6. Activate Necrotic Ooze using Auriok Bladewarden's ability by tapping it, giving itself +X/+X until end of turn, where X is Necrotic Ooze's power
7. Activate Necrotic Ooze using Phyrexian Colossus' ability by paying eight life, untapping it
8. Repeat from step 4

Results

• Infinite lifegain
• Infinite lifegain triggers
• Infinitely large creatures until end of turn