Urza, Prince of Kroog + Metalworker + Swiftfoot Boots

Urza, Prince of Kroog

Metalworker

Swiftfoot Boots

How it works

1. If needed, activate Swiftfoot Boots' equip ability by paying 1, attaching it to Metalworker.
2. Activate Metalworker by tapping it and revealing at least four artifact cards from your hand, adding at least eight C.
3. Activate Urza by paying 6, creating a token copy of Metalworker that is a 1/1 Soldier.
4. Activate Swiftfoot Boots' equip ability by paying 1, attaching it to the Metalworker token.
5. Repeat from step 2 using the Metalworker token instead.
6. Once you have infinite colorless mana, you may target any artifact you control to get infinite copies of them.

This ingenious engine gets its incredible engine power from Metalworker, which taps to generate a massive windfall of colorless mana by revealing artifacts in your hand. Because Metalworker suffers from summoning sickness, Swiftfoot Boots steps in to grant the crucial haste needed to tap immediately, while also keeping your key pieces safe behind hexproof. Once you have that initial mana, Urza, Prince of Kroog converts it into a token copy of Metalworker, bypassing the legend rule and untapping fresh to produce even more explosive mana. Finally, Urza, Prince of Kroog's passive lord ability pumps all your newly minted artifact creatures with a +2/+2 bonus, turning your infinite loop into a game-winning board state.