Phyrexian Altar + Dualcaster Mage + Presumed Dead

Prerequisites

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Steps

1. 1Cast Presumed Dead by paying its mana cost.
2. 2Holding priority, cast Dualcaster Mage by paying its mana cost.
3. 3When Dualcaster Mage enters, it triggers, copying Presumed Dead, with the copy targeting Dualcaster Mage.
4. 4Resolve the copy of Presumed Dead.
5. 5Holding priority, activate Phyrexian Altar by sacrificing Dualcaster Mage.
6. 6When Dualcaster Mage dies, it triggers, returning it from your graveyard to the battlefield.
7. 7Repeat from step 3.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers