Aatchik, Emerald Radian | Earthcraft | Cloudstone Curio

Cards

({3} magic symbol) ({B} magic symbol) ({B} magic symbol) ({G} magic symbol) plus enough mana to pay for commander tax if applicable available.

Cast
Aatchik either from your hand or from the command zone by paying ({3} magic symbol) ({B} magic symbol) ({B} magic symbol) ({G} magic symbol) plus commander tax, if applicable.
When
Aatchik enters the battlefield, its first ability and
Cloudstone Curio trigger.
Resolve the Cloustone Curio trigger, choosing to return nothing to your hand.
Resolve the
Aatchik trigger, creating a 1/1 Insect creature token for each artifact and/or creature card in your graveyard.
When the Insects enter the battlefield,
Cloudstone Curio triggers that many times., returning
Aatchik from the battlefield to your hand with the first trigger and returning nothing to your hand with each subsequent trigger.
Activate
Earthcraft twice by tapping two Insects, untapping a basic Swamp and a basic Forest.
Activate the Swamp and Forest by tapping them, adding ({B} magic symbol) ({G} magic symbol) .
Repeat from step 6 two additional times.
Repeat from step 1.

If you have seven or more artifact and/or creature cards in your graveyard, this combo will net infinite untapped tokens and untap of basic lands you control.