Necrotic Ooze + Tree of Redemption + Phyrexian Colossus + Auriok Bladewarden

Necrotic Ooze

Tree of Redemption

Phyrexian Colossus

Auriok Bladewarden

How it works

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.