Cast Encroaching Dragonstorm by paying {3}{G}.
When Encroaching Dragonstorm enters the battlefield, its first ability triggers, causing you to search your library for two basic land cards and put them onto the battlefield tapped.
When the lands enter the battlefield, Nesting Dragon triggers twice.
Resolve the first trigger, creating a 0/2 Dragon Egg creature token.
When the Dragon Egg enters the battlefield, Encroaching Dragonstorm's second ability triggers, returning it from the battlefield to your hand.
Resolve the second Nesting Dragon trigger, creating a 0/2 Dragon Egg creature token.
Activate Phyrexian Altar twice by sacrificing both Dragon Eggs, adding {1}{G}.
When the Dragon Eggs die, they trigger, creating two 2/2 Dragon creature tokens.
Activate Phyrexian Altar twice by sacrificing both Dragon tokens, adding {2}.
Repeat.

Put all basic lands from your library onto the battlefield tapped

Nesting Dragon

Encroaching Dragonstorm

Phyrexian Altar

Cast Encroaching Dragonstorm by paying {3}{G}.
When Encroaching Dragonstorm enters, it first ability triggers, causing you to search your library for two basic land cards and put them onto the battlefield tapped
When the lands enter the battlefield, Tireless Provisioner and Nesting Dragon trigger twice.
Resolve both Tireless Provisioner triggers, creating two Treasure tokens.
Activate both Treasure tokens by tapping and sacrificing them, adding {1}{G}.
Resolve a Nesting Dragon trigger, creating a 0/2 Dragon Egg creature token.
When the Dragon Egg enters the battlefield, Ganax and Encroaching Dragonstorm's second ability trigger.
Resolve the Ganax trigger, creating a Treasure token.
Resolve the Encroaching Dragonstorm trigger, returning it from the battlefield to your hand.
Resolve the remaining Nesting Dragon trigger, creating a 0/2 Dragon Egg creature token.
When the Dragon Egg enters the battlefield, Ganax triggers, creating a Treasure token.
Activate two Treasures by tapping and sacrificing them, adding {2}.
Repeat

Ganax, Astral Hunter

Tireless Provisioner

Cast Encroaching Dragonstorm by paying {3}{G}.
When Encroaching Dragonstorm enters, it first ability triggers, causing you to search your library for two basic land cards and put them onto the battlefield tapped
When the lands enter the battlefield, Tireless Provisioner and Dragonback Assault trigger twice.
Resolve both Tireless Provisioner triggers, creating two Treasure tokens.
Activate both Treasure tokens by tapping and sacrificing them, adding {1}{G}.
Resolve a Dragonback Assault trigger, creating a 4/4 Dragon creature token.
When the Dragon enters the battlefield, Ganax and Encroaching Dragonstorm's second ability trigger.
Resolve the Ganax trigger, creating a Treasure token.
Resolve the Encroaching Dragonstorm trigger, returning it from the battlefield to your hand.
Resolve the remaining Dragonback Assault trigger, creating a 4/4 Dragon creature token.
When the Dragon enters the battlefield, Ganax triggers, creating a Treasure token.
Activate two Treasures by tapping and sacrificing them, adding {2}.
Repeat

Combos with "Encroaching Dragonstorm"