Jeskai Ascendancy + Sylvan Awakening + Mystic Speculation

Jeskai Ascendancy

Sylvan Awakening

Mystic Speculation

How it works

1. Cast Sylvan Awakening by paying 2, causing all lands you control to become 2/2 Elemental creatures that are still lands until end of turn.
2. Jeskai Ascendacy first and second abilities trigger.
3. Resolve the first Jeskai Ascendancy trigger, giving creatures you control +1/+1 until end of turn and untapping them.
4. Resolve the second Jeskai Ascendancy trigger, allowing you to loot.
5. Activate all of your lands by tapping those, adding at least 3.
6. Cast Mystic Speculation with buyback by paying 2.
7. Jeskai Ascendacy first and second abilities trigger.
8. Resolve the first Jeskai Ascendancy trigger, giving creatures you control +1/+1 until end of turn and untapping them.
9. Resolve the second Jeskai Ascendancy trigger, allowing you to loot.
10. Repeat from step 5.

This clever loop turns your entire land base into a massive, self-sustaining engine. Sylvan Awakening first animates your lands into creatures, allowing them to tap for mana and simultaneously stand ready to be untaped. By casting Mystic Speculation repeatedly with its buyback cost, you trigger Jeskai Ascendancy over and over; every iteration untaps your lands to pay for the next spell while providing infinite looting to cycle through your deck. Ultimately, the continuous triggers pump your lands into infinitely large attackers while generating boundless storm count and mana.