Temur Sabertooth + Gaea's Cradle + Great Oak Guardian + Vizier of Tumbling Sands

Temur Sabertooth

Gaea's Cradle

Great Oak Guardian

Vizier of Tumbling Sands

How it works

1. Activate Gaea's Cradle by tapping it, adding at least eight .
2. Activate Temur Sabertooth by paying 1, returning Great Oak Guardian to your hand.
3. Cast Great Oak Guardian by paying 5.
4. When Great Oak Guardian enters, it triggers itself, untapping all creatures you control and giving them +2/+2 until end of turn.
5. Activate Vizier of Tumbling Sands by tapping it, untapping Gaea's Cradle.
6. Repeat.
7. If you control nine or more creatures, this combo will net infinite green mana, which you then may activate Temur Sabertooth any number of times and recast any creatures castable with green mana any number of times, effectively "blinking" your green creatures any number of times.
8. You may also activate Vizier of Tumbling Sands any number of times.

This explosive loop uses Gaea's Cradle to generate a massive pool of green mana, which Temur Sabertooth then uses to repeatedly bounce Great Oak Guardian back to your hand. Each time you recast Great Oak Guardian, its enters-the-battlefield trigger untaps your creatures and lands—including Vizier of Tumbling Sands, which can also pitch in to untap Gaea's Cradle as needed. Because the Cradle produces more mana than the bounce and recast costs require, you are left with infinite green mana, infinite creature entries, and arbitrarily massive creatures.