Temur Sabertooth + Gaea's Cradle + Kelpie Guide + Hyrax Tower Scout

Temur Sabertooth

Gaea's Cradle

Kelpie Guide

Hyrax Tower Scout

How it works

1. Activate Gaea's Cradle by tapping it, adding at least six .
2. Activate Temur Sabertooth by paying 1, returning Hyrax Tower Scout to your hand.
3. Cast Hyrax Tower Scout by paying 2.
4. When Hyrax Tower Scout enters, it triggers itself, untapping Kelpie Guide.
5. Activate Kelpie Guide by tapping it, untapping Gaea's Cradle.
6. Repeat.
7. Once you have infinite green mana, you 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 Kelpie Guide any number of times.

This verdant loop relies on generating massive green mana with Gaea's Cradle and constantly cycling creatures to reset your untap effects. When you cast Hyrax Tower Scout, its enters-the-battlefield trigger untaps Kelpie Guide, which in turn untaps Gaea's Cradle to feed the mana required to keep the engine moving. Temur Sabertooth provides the escape hatch, letting you pay to bounce the Scout back to your hand so you can recast it endlessly and net infinite mana in the process.