This clever loop turns the self-inflicted pain of Spear Spewer into a continuous engine by letting Dissipation Field bounce the goblin back to your hand every time it pings you. Because you can recast it for just one mana, Runaway Steam-Kin effortlessly tracks the red spell to continuously rebuild its +1/+1 counters and fund the entire loop with its mana-generating ability. Meanwhile, Hammer of Purphoros quietly ensures everything is in place, giving your repeatedly cast creatures haste right as they enter the battlefield.