Phyrexian Altar + Voidmage Prodigy + Yedora, Grave Gardener

GU identity

Commander legal

The 3 combo pieces

• Phyrexian Altar
• Voidmage Prodigy
• Yedora, Grave Gardener

How to execute it

1. Activate Phyrexian Altar by sacrificing Voidmage Prodigy, adding {U}.
2. When Voidmage Prodigy dies, Yedora triggers, returning Voidmage Prodigy from your graveyard to the battlefield face down as a Forest land.
3. Activate Voidmage Prodigy by tapping it, adding {G}.
4. Activate Voidmage Prodigy's morph ability by paying {U}, turning it face up.
5. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite green mana
• Infinite landfall triggers
• Infinite sacrifice triggers