Cast Phyrexian Metamorph by paying its mana cost. Choose to have it enter as a copy of Princess Yue.
Put Phyrexian Metamorph into your graveyard due to the legend rule.
When Phyrexian Metamorph dies, it triggers, returning it from your graveyard to the battlefield as a land named Moon. Choose to have it enter as a copy of Wormfang Newt, gaining its abilities.
When Phyrexian Metamorph enters, its first ability triggers, exiling it.
When Phyrexian Metamorph leaves the battlefield, its second ability triggers, returning Phyrexian Metamorph from exile to the battlefield. Choose to have it enter as a copy of Princess Yue.
Repeat from step 2.

Infinite LTB

Infinite ETB

Infinite death triggers

Infinite landfall triggers

Princess Yue

Wormfang Newt

Phyrexian Metamorph

Cast Phyrexian Metamorph by paying its mana cost. Choose to have it enter as a copy of Princess Yue.
Put Phyrexian Metamorph into your graveyard due to the legend rule.
When Phyrexian Metamorph dies, it triggers, returning it from your graveyard to the battlefield as a land named Moon. Choose to have it enter as a copy of Wormfang Turtle, gaining its abilities.
When Phyrexian Metamorph enters, its first ability triggers, exiling it.
When Phyrexian Metamorph leaves the battlefield, its second ability triggers, returning Phyrexian Metamorph from exile to the battlefield. Choose to have it enter as a copy of Princess Yue.
Repeat from step 2.

Wormfang Turtle

Cast Phyrexian Metamorph by paying its mana cost. Choose to have it enter as a copy of Princess Yue.
Put Phyrexian Metamorph into your graveyard due to the legend rule.
When Phyrexian Metamorph dies, it triggers, returning it from your graveyard to the battlefield as a land named Moon. Choose to have it enter as a copy of Astral Dragon, gaining its abilities.
When Phyrexian Metamorph enters, it triggers, creating two token copies of itself, thus creating two copies of Moon with Astral Dragon's abilities, that are 3/3 Dragon creatures in addition to its other types.
Put all but one of the [[clones]] into your graveyard due to the legend rule.
The Phyrexian Metamorph tokens each trigger. Resolve a trigger, creating two token copies of itself, thus creating two copies of Moon with Astral Dragon's abilities, that are 3/3 Dragon creatures in addition to its other types.
Repeat from step 5.

Combos with "Princess Yue"