Quillspike, Phyrexian Altar, and Puppeteer Clique

Prerequisites

• Quillspike on the battlefield
• Phyrexian Altar on the battlefield
• Puppeteer Clique on the battlefield
• Puppeteer Clique does not have a -1/-1 counter on it

Steps

1. Activate Phyrexian Altar by sacrificing Puppeteer Clique, adding
2. When Puppeteer Clique dies, its persist ability triggers, returning it to the battlefield from your graveyard with a -1/-1 counter on it
3. When Puppeteer Clique enters the battlefield, it triggers, putting target creature card from an opponent's graveyard onto the battlefield under your control
4. Activate Quillspike by paying and removing the -1/-1 counter from Puppeteer Clique, giving Quillspike +3/+3 until end of turn
5. Repeat
6. You may also sacrifice the creature put under your control by Puppeteer Clique during each iteration to get infinite colored mana

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely large Quillspike until end of turn
• Infinite sacrifice triggers
• Put all creatures from each opponent's graveyard onto the battlefield under your control