Chishiro, the Shattered Blade, Cloudstone Curio, Ashnod's Altar, and Chromatic Orrery

Prerequisites

• Chishiro, the Shattered Blade on the battlefield
• Cloudstone Curio on the battlefield
• Ashnod's Altar on the battlefield
• Chromatic Orrery on the battlefield
• You have an Aura card in hand with mana value one or less
• You control an Aura with mana value one or less
• You have enough mana available to cast the Aura in hand

Steps

1. Cast an Aura with mana value one or less by paying its mana cost, targeting any creature you control
2. The Aura enters the battlefield, triggering Cloudstone Curio and Chishiro
3. Resolve the Cloudstone Curio trigger, choosing to return any other Aura with mana value one or less from the battlefield to your hand
4. Resolve the Chishiro trigger, creating a 2/2 Spirit creature token
5. Activate Ashnod's Altar by sacrificing the Spirit token, adding
6. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count