Princess Yue, Astral Dragon, and Hulking Metamorph

Prerequisites

• Princess Yue on the battlefield
• Astral Dragon on the battlefield
• Hulking Metamorph on the battlefield
• available

Steps

1. Cast Hulking Metamorph for its prototype cost by paying
2. Choose to have it enter as a copy of Princess Yue
3. Put Hulking Metamorph into your graveyard due to the legend rule
4. When Hulking Metamorph dies, it triggers, returning it from your graveyard to the battlefield as a land named Moon
5. Choose to have it enter as a copy of Astral Dragon, gaining its abilities
6. When Hulking 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
7. Put all but one of the [[clones]] into your graveyard due to the legend rule
8. The Hulking Metamorph tokens each trigger
9. 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
10. Repeat from step 5

Results

• Infinite ETB
• Infinite LTB
• Infinite creature token copies of all noncreature permanents
• Infinite creature tokens
• Infinite death triggers
• Infinite landfall triggers