Encroaching Dragonstorm by paying ({3} magic symbol) [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.
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 four Treasures by tapping and sacrificing them, adding ({3} magic symbol) ({G} magic symbol) .
Repeat.
Results
Put all basic lands from your library onto the battlefield tapped.