Urza, Prince of Kroog + Bag End Banquet + Smellerbee, Rebel Fighter

Urza, Prince of Kroog

Bag End Banquet

Smellerbee, Rebel Fighter

How it works

1. Activate Urza by paying 6, creating a token copy of Bag End Banquet that is a 1/1 Soldier in addition to its other types.
2. When the Bag End Banquet token enters, it triggers, creating three Food tokens.
3. Activate the Bag End Banquet token by tapping it, adding C for each Food you control.
4. Repeat

This loop turns Urza, Prince of Kroog into a mana-positive engine by repeatedly cloning Bag End Banquet for six mana, a cost easily offset because each new copy enters the battlefield and immediately floods your board with three fresh Food tokens to tap the banquet for a massive return of colorless mana. Meanwhile, Smellerbee, Rebel Fighter grants the army of newly minted 1/1 Soldier artifact creature copies the haste they need to attack immediately, while Urza's static lord ability pumps every single one of those tokens with a +2/+2 bonus.