Shaman of the Great Hunt and Mind Over Matter on the battlefield.
You control at least four creatures that have power 4 or greater.
You control a permanent that can tap to produce at least ({GU} magic symbol) .
({2} magic symbol) ({GU} magic symbol) available.
Steps
Activate a permanent by tapping it, adding at least ({GU} magic symbol) .
Activate Shaman of the Great Hunt by paying ({2} magic symbol) ({GU} magic symbol) ({GU} magic symbol) , causing you to draw a card for each creature you control with power 4 or greater.
Activate Mind Over Matter by discarding a card, untapping the permanent tapped in step 1.
Activate a permanent by tapping it, adding at least ({GU} magic symbol) .
Repeat from step 3 until you have at least ({2} magic symbol) ({GU} magic symbol) ({GU} magic symbol) available.
Repeat from step 2.
Notes
If you control a permanent that taps for two or more mana, you may discard fewer cards each loop, and you may start the loop while controlling fewer creatures with power 4 or greater.