Urza, Prince of Kroog + Doubling Cube + Swiftfoot Boots

3-card combo · WU

Verdict

Yes — this 3-card loop converts 11 floating mana into infinite mana and infinite artifact token copies inside any Urza, Prince of Kroog shell.

Cards required

Cheapest stack total

$36.83

Color identity

Popularity

83 decks

Format

Commander

Buy required cards on TCGplayer

Urza, Prince of Kroog's activated ability creates a token copy of Doubling Cube as a 1/1 Soldier for 6 mana; Swiftfoot Boots equips to that token for 1, letting it tap to double the mana pool. Each iteration requires 10 mana and produces at least 8 from the token, with the gap closing fast as Doubling Cube's exponential math takes over and the loop becomes self-sustaining. The Azorius artifact-token archetype that already wants Urza in the command zone runs both pieces naturally.

How it works

Prerequisites

—

Steps

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

Result

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

Cheaper, tighter, alternate lines

Lightning Greaves replaces Swiftfoot Boots and shaves the equip cost to 0, reducing the startup threshold. Once mana goes infinite, target any other artifact on the battlefield — Thopter Foundry, Wurmcoil Engine, or a mana rock — to flood the board with tokens and close through combat or an ETB payoff like Altar of the Brood.

Urza, Prince of Kroog + Doubling Cube + Swiftfoot Boots

How it works

Cheaper, tighter, alternate lines

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