Urza, Prince of Kroog + Boommobile + Exalted Sunborn

Urza, Prince of Kroog

Boommobile

Exalted Sunborn

How it works

1. Activate Urza by paying 6, creating two token copies of Boommobile that are 1/1 Soldier artifact creatures.
2. When the Boommobile tokens enters the battlefield, they trigger, adding 8 that can only be spent to activate abilities.
3. Repeat.

This loop begins by using Urza, Prince of Kroog's six-mana activation to target a Boommobile, which thanks to Exalted Sunborn's replacement effect actually enters the battlefield as two token copies instead of just one. As each Boommobile token arrives, its entrance trigger nets four restricted mana—eight total between the pair—providing more than enough fuel to immediately pay for Urza, Prince of Kroog's ability again and keep the cycle spinning. Because Urza, Prince of Kroog also grants all your artifact creatures a permanent +2/+2 anthem, your expanding army of Boommobile tokens grows increasingly massive while you effortlessly generate infinite mana, creature tokens, and damage to overwhelm any opponent.