Urza, Prince of Kroog + Doubling Cube + Ring of Valkas

Prerequisites

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Steps

1. 1Float at least .
2. 2Activate Doubling Cube by paying and tapping it, adding at least .
3. 3Activate Urza by paying , creating a token copy of Doubling Cube that is a 1/1 Soldier.
4. 4Activate Ring of Valkas' equip ability by paying , attaching it to the Doubling Cube token.
5. 5Repeat from step 2 using the Doubling Cube token instead.
6. 6Once you have infinite mana, you may target any artifact you control to get infinite copies of them.

Effects

• Infinite copies of artifacts you control
• Infinite creature copies of artifacts you control
• Infinite creature ETB
• Infinite creature tokens
• Infinite mana permanents you control can produce