Princess Yue + Wormfang Turtle + Deceptive Frostkite

Princess Yue

Wormfang Turtle

Deceptive Frostkite

How it works

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

This mesmerizing loop sets up an infinite cycle by having Deceptive Frostkite morph its identity through clever copying and dying mechanics. First, you cast Deceptive Frostkite and let the legend rule send it to the graveyard as a copy of Princess Yue, whose own replacement effect immediately returns it to the battlefield as a land named Moon. From there, you choose to have it enter as a copy of Wormfang Turtle, triggering its enters-the-battlefield ability to exile itself, which subsequently triggers its leaves-the-battlefield ability to return to play as Princess Yue once more. By endlessly transitioning between these states, you generate an unbounded sequence of creature enters-the-battlefield, leaves-the-battlefield, death, and landfall triggers.