Earthcraft + Dictate of Karametra + Ant Queen

Earthcraft

Dictate of Karametra

Ant Queen

How it works

1. Activate Ant Queen by paying 1, creating a creature token
2. Activate Earthcraft by tapping the creature token, untapping a basic Forest.
3. Activate the Forest by tapping it, adding
4. Dictate of Karametra triggers, adding
5. Repeat

This delightful concoction relies on Ant Queen to churn out a steady stream of 1/1 green Insect creature tokens, which Earthcraft immediately puts to work by tapping them to untap a basic land. Thanks to Dictate of Karametra doubling up the mana produced whenever that land is tapped, you suddenly generate a surplus of green mana with every iteration. You are left with infinite creature enters-the-battlefield triggers and an endless swarm of tapped Insect tokens to overwhelm your opponents.