By using Ashnod's Transmogrant to turn Howlsquad Heavy into an artifact, we lay the foundation for a brilliant mechanical loop. Once Howlsquad Heavy is properly typed as an artifact and you've reached max speed, its tap ability generates a surplus of red mana based on your goblin count. From there, Voltaic Construct steps in to untap Howlsquad Heavy for a mere two mana, allowing you to repeat the process indefinitely for infinite red mana.