The Chain Veil, Ashnod's Altar, Aphetto Alchemist, Intruder Alarm, and Garruk, Cursed Huntsman

Prerequisites

• The Chain Veil on the battlefield
• Ashnod's Altar on the battlefield
• Aphetto Alchemist on the battlefield
• Intruder Alarm on the battlefield
• Garruk, Cursed Huntsman on the battlefield
• Aphetto Alchemist does not have summoning sickness

Steps

1. Activate Garruk's first loyalty ability by putting zero loyalty counters on it, creating two 2/2 Wolf creature tokens
2. When the Wolfs enter the battlefield, Intruder Alarm triggers twice
3. Resolve the first trigger, untapping all creatures
4. Activate Aphetto Alchemist by tapping it, untapping The Chain Veil
5. Resolve the second Intruder Alarm trigger, untapping all creatures
6. Activate Aphetto Alchemist by tapping it, untapping target artifact or creature
7. Activate Ashnod's Altar twice by sacrificing the two Wolf tokens, adding
8. When the Wolves die, they trigger, putting two loyalty counters on each Garruk planeswalker you control
9. Activate The Chain Veil by paying and tapping it, allowing you an additional activation of your planeswalkers' loyalty abilities this turn
10. Repeat

Results

• Infinite activations of loyalty abilities of all other Planeswalkers you control
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana artifacts you control can produce
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of all creatures
• Infinite untap of artifacts you control