Glaring Fleshraker's first ability triggers, creating a 0/1 Eldrazi Spawn creature token.
When Ornithopter enters the battlefield, Glaring Fleshraker's second ability triggers, dealing 1 damage to each opponent.
Activate a basic Forest by tapping it, adding ({G} magic symbol) .
Activate Earthcraft by tapping Ornithopter, untapping the Forest.
Activate the Forest by tapping it, adding ({G} magic symbol) .
Activate Earthcraft by tapping the Eldrazi Spawn, untapping the Forest.
Activate Temur Sabertooth by paying ({1} magic symbol) ({G} magic symbol) , returning Ornithopter from the battlefield to your hand.
Repeat.
If desired, once you have infinite tapped Eldrazi Spawn tokens, you may sacrifice them to get infinite ({C} magic symbol) , and then you may forego tapping or sacrificing them on future iterations to get infinite creature tokens.
Results
Infinite LTB.
Infinite ETB.
Infinite sacrifice triggers.
Infinite death triggers.
Infinite colorless mana.
Infinite damage.
Infinite storm count.
Infinite creature tokens.
Infinite mana basic lands you control can produce.