Princess Yue | Wormfang Turtle

Cards

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

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