Rhythm of the Wild, Woodfall Primus, and Phyrexian Altar

Prerequisites

• Rhythm of the Wild on the battlefield
• Woodfall Primus on the battlefield
• Phyrexian Altar on the battlefield
• Woodfall Primus does not have a -1/-1 counters on it

Steps

1. Activate Phyrexian Altar by sacrificing Woodfall Primus, adding one mana of any color
2. Woodfall Primus's persist ability triggers, returning it to the battlefield with no counters on it due to Woodfall Primus's riot ability
3. Woodfall Primus enters the battlefield, destroying target noncreature permanent
4. Repeat

Results

• Destroy any number of noncreature permanents
• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers