Dualcaster Mage, Thunderous Debut, Mortuary, and Phyrexian Altar

Prerequisites

• Dualcaster Mage in hand
• Thunderous Debut in hand
• Mortuary on the battlefield
• Phyrexian Altar on the battlefield
• You control at least one additional artifact, enchantment and/or token
• available

Steps

1. Cast Thunderous Debut by paying and sacrificing an artifact, enchantment or token
2. Holding priority, cast Dualcaster Mage by paying
3. When Dualcaster Mage enters the battlefield, it triggers, copying Thunderous Debut
4. Activate Phyrexian Altar by sacrificing Dualcaster Mage, adding one mana of any color
5. When Dualcaster Mage dies, Mortuary triggers, putting Dualcaster Mage on top of your library from your graveyard
6. Resolve the copy of Thunderous Debut, causing you to look at the top twenty cards of your library and put Dualcaster Mage and up to one other creature card onto the battlefield
7. Repeat from step 3

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Put all creature cards from your library onto the battlefield