Princess Yue | Wormfang Turtle

Cards

Hulking Metamorph in hand.
Princess Yue and
Wormfang Turtle on the battlefield (
Princess Yue is not a land).

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

This combo has been estimated to be Exhibition (Bracket 1+).