Quillspike, Phyrexian Altar, and Woodfall Primus

Prerequisites

• Quillspike on the battlefield
• Phyrexian Altar on the battlefield
• Woodfall Primus on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Woodfall Primus, adding
2. When Woodfall Primus dies, its persist ability triggers, returning it to the battlefield from your graveyard with a -1/-1 counter on it
3. Whe Woodfall Primus enters the battlefield, it triggers, targeting any noncreature permanent
4. Holding priority, activate Quillspike by paying and removing the -1/-1 counter from Woodfall Primus, giving Quillspike +3/+3 until end of turn
5. Repeat
6. You may also repeat this loop as desired during future turns to destroy any number of noncreature permanents

Results

• Lock
• Mass Land Denial
• Destroy all noncreature permanents opponents control each turn
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinitely large creature until end of turn